Persistent State Advantage Play Slot Machines

5 Coin Frenzy Jackpots is an Aristocrat game series that wraps a persistent-state mechanic in Asian-themed branding — Tiger Wealth, Eight Phoenix, Wukong Wealth, 8 Dragon, and others all run the same engine with different art. The core game is an all-ways-pays video slot with bets in 88-credit increments. What makes the series distinct from other Aristocrat titles is the top-box meter holding up to five coins.

The base game features eleven pay-table symbols plus a wild, with the red envelope on reel 3 acting as the collection trigger. When a red envelope lands, at least one coin (sometimes more) flies up to the top-box meter. The meter persists from spin to spin and player to player. Once five coins are collected, the screen background turns gold and Frenzy Mode begins — you get a fixed number of spins with the Random Wilds Feature firing more aggressively. Random Wilds can drop between 1 and 15 wilds anywhere on the reels, including during base play and the free games bonus.

Aztec Vault is an Aristocrat slot — sister title to Cleopatra's Vault — running on the same Cash-on-Reels persistent-state engine. The defining presentation is vertical token columns positioned above each reel, with coins carrying credit prizes that accumulate in those columns as coin symbols land below. The two themes share an identical engine; only the art package differs (Aztec leans on jaguar, sun-disk, and pyramid iconography, while Cleopatra uses the standard Egyptian high-pay set).

The mechanic is straightforward: each time a coin symbol lands on a reel, the coin moves into the column above that reel with its credit prize attached. The columns persist across spins and across player sessions — coins left by a previous player remain. When a column fills completely with coins, all of the credit prizes in that column are awarded to the player on that spin.

Big Ocean Jackpots is IGT's progressive-jackpot reimagining of the studio's iconic Ocean Magic engine. The base game runs the same persistent-bubble mechanic Ocean Magic players have known for years, with the major addition of jackpot prizes attached to specific bubbles. Like its predecessor, the game is fundamentally about the bubbles that periodically rise from the bottom of the screen and travel one row up with every subsequent spin until they reach the top and disappear.

The bubbles come in two flavors: jackpot bubbles carrying Mini, Minor, or Maxi prizes, and wild bubbles. When a jackpot bubble lands on top of a coin symbol on the reels, the player is awarded that jackpot's current value. When a wild bubble lands on a coin symbol instead, every poker symbol on the screen — purple spade, green club, red heart, yellow diamond — turns wild, often producing massive base-game wins from a single landing event. If two wild bubbles land on coins simultaneously, all wild wins receive a 2x multiplier.

Bubble Mania is AGS's persistent-state slot family on the Orion Portrait and Orion Curve cabinets, with three sister titles released to date — the witch-themed Potion Pays, the dragon-themed Hai Long, and the carbonation-themed Fizzy Frenzy. All three run the same underlying engine: 5-reel, 4-row, 50-line video slots with operator-selectable denominations and the option to be configured as either standalone or linked progressives.

The signature mechanic is the persistent bubble layer. Cash-on-reels bubbles appear from the bottom of the reel array and float upward one row with every subsequent spin until they reach the top and disappear. Each bubble carries either a credit value or one of two progressive jackpot triggers. When a bubble lands on top of a pearl or other trigger symbol on the reels, the bubble's prize is awarded. Theme-specific elements add their own flair — Hai Long's dragon, for example, randomly swoops through and adds oversized bubbles in multiple positions.

Buffalo Diamond is Aristocrat's 10th-anniversary release in the Buffalo franchise, built on the Flame55 4K cabinet with a honeycomb 4-5-6-5-4 reel structure that delivers 2,400 ways to win. The game uses the same 13 base symbols Buffalo players know — buffalo, eagle, cougar, wolf, elk, plus low-paying royals — but layers a persistent multiplier collection mechanic on top. There are four bet levels available: $0.75, $1.50, $2.50, and $4.00, with the gaps between levels widening as you climb. The $4 top bet is the only level linked to the wide-area Grand progressive jackpot, which resets at 500,000 credits.

The persistent state is the diamond collection on the top display. Diamonds appear on the reels in three colors — green, blue, and purple. Each color feeds a separate counter for free games at a specific multiplier: green diamonds add free games at 2x, blue diamonds add free games at 3x, and purple diamonds add free games at the headline 4x. The counts are persistent across sessions and tracked separately at each of the four bet levels — meaning the cabinet stores twelve individual meters at any given time.

Cash Burst is a Light & Wonder slot family — formerly Scientific Games before the rebrand — with multiple themes running on the same engine. Force of Babylon and Orb of Atlantis are the two most common variants on casino floors. The base game runs on a 5x4 reel set with 50 paylines and 50-credit bet levels. The headline mechanic is a bubble-and-symbol interaction borrowed from the broader floating-orb slot family, with Cash Burst's twist being cash prize amounts displayed inside each bubble.

Bubbles appear during base play and float across the reels, persisting from spin to spin until they either land on a Cash Burst trigger symbol or drift off the playfield. Each bubble carries a printed cash prize. When a bubble lands on top of a Cash Burst symbol on the reels, the bubble's prize is awarded directly to the player. Multiple bubbles can be on the screen at once.

Cash Falls is a Light & Wonder slot family — produced through the Firebird Studios subsidiary, formerly Scientific Games — with multiple themed variants running on the same engine. Versions in market include Huo Zhu, Outback Fortune, Pirate's Trove, Island Bounty, Glacier Gold, and others. The base game uses a distinctive 4-4-6-6-8 reel layout that gives roughly 4,500 to 4,600 ways to win depending on the variant, with all bets fixed at 50 credits per spin in an all-ways-pays format.

The headline mechanic is the Cash Falls feature itself. Bonus symbols carrying multiplier values (up to 100x bet) or one of four fixed jackpot prizes can land on any reel during base play. Once a bonus symbol lands, it sticks to that reel for the next three spins. If another bonus symbol lands on the same reel during that window, the spin counter resets and both symbols continue to hold. The right-hand reels (6 and 8 positions tall) get the most bonus-symbol density because of the expanding shape.

Cashman Double Bingo is an Aristocrat slot family with the Sun & Moon variant being the most common version on casino floors. The game runs on the Cashman premium series cabinet and uses two simultaneous bingo boards as the central mechanic — one red board associated with the Sun theme and one blue board associated with the Moon theme. The dual-board structure means twice the chances at bingo lines per spin and a persistent-state element that's both visible and easy to read.

The base game runs as a standard Aristocrat reel slot. Bingo symbols landing on the main matrix during base play are copied over to their respective bingo boards, with Sun-flagged symbols filling the red board and Moon-flagged symbols filling the blue board. Each filled board space carries a prize value, and those prize values persist on the boards across spins and across sessions — they only disappear when a bingo line completes and the board pays out.

Double Dragon is the apslot.com handle for Light & Wonder's Jin Long Jin Bao 2 — the direct sequel to the original Jin Long Jin Bao that ships under the Dragon handle. The 2 in the title is functional rather than cosmetic: the sequel doubles up the persistent-state mechanic that anchored the original. The base game runs on a 5-reel L&W video cabinet with the upgraded twin-dragon presentation and an Asian-themed art package built around twin gold and red dragons.

The defining mechanic is the twin-collector structure displayed above the reels. Where Jin Long Jin Bao tracked a single dragon counter, Jin Long Jin Bao 2 tracks two separate dragon collectors that progress independently — typically a gold-dragon meter and a red-dragon meter, each with its own trigger threshold and bonus event. Both meters persist across player sessions and both can be in elevated state simultaneously, which is the structural source of the title's compounded AP angle.

Dragon Lanterns is an Aristocrat slot running on Aristocrat upright cabinets, themed around traditional Asian lantern iconography with dragon imagery overlaid. The base game uses Aristocrat's classic expanding-wild engine with selectable denominations and a flexible wagering system. The two defining features are Persistent Floating Wilds and Wild Explosion — both visible as state on the cabinet and central to the AP read.

The persistent state mechanic works through Random Wilds that appear during both paid spins and the Free Games Feature. Once a wild lands, it moves up one position on the reels with each successive spin, persisting until it scrolls off the top. That single rule — wilds that carry between players and continue migrating upward — is what gives Dragon Lanterns its persistent-state AP angle.

Dragon Unleashed is a Light & Wonder slot family — Prosperity Packets, Red Fleet, Three Legends, and Treasured Happiness are the four primary themes — running on a 5x3 reel set with 243 ways-to-win evaluation rather than fixed paylines. Bet structure typically runs from 0.28 to 88.00 with an Asian-themed art package across all four titles. The defining mechanic is persistent orbs with credit prizes that land on the reels and shift down one row per spin.

Pearl prize symbols (the orbs) land in the top or center positions and nudge downward one row on each subsequent spin, but only if the Dragon Bonus is not triggered. Prizes range from 1x to 150x stake, and pearls can also award Mini or Minor jackpots of 10x or 44x stake. The Streak Respins feature triggers when a Dragon Respin symbol lands on reel 5 — any pearl symbols become sticky and accumulate across additional respins until a respin lands without a Respin symbol.

Epic Lion and Sacred Deer are sister games from Light & Wonder — produced under what was previously Scientific Games — running the same engine with paired theming. Epic Lion uses a savanna lion motif, Sacred Deer uses a forest stag. Both run on a standard 5-reel, 3-row video layout with multiple paylines and player-selectable denominations.

The defining mechanic is per-pay-line multipliers. Each individual pay line on the game tracks its own multiplier value independently. When a pay line lands a winning combination, that specific line's multiplier increments to the next multiple of 5 — typically 5x, 10x, 15x and so on, with a cap. When a pay line fails to land a win, its multiplier resets to the default of 1x. The increments and resets happen independently across all active lines on every spin.

Farmville Golden Harvest is an Aristocrat slot built on the licensed Farmville mobile-game property, running on the Mighty Cash family engine. The base game uses a 5x3 reel layout with multi-line bet structure and the standard Aristocrat denomination range. The Mighty Cash 5x multiplier mechanic and a casino-wide progressive free games link extend the original Farmville formula.

The defining feature is the metamorphic corn pot above the reels — a persistent collector that grows visibly as the player accumulates pumpkins, corn, and other harvest symbols on the reels. When the pot triggers, the player gets a choice between two bonus events: a Match-3 Jackpot Pick'em event or an interactive Crack the Eggs feature that awards credits, jackpots, or both.

Fire Light Eruption is an Aristocrat slot built on the Fire Light family engine, themed around volcanic eruption with phoenix bird iconography. The base game runs on a standard 5-reel video layout with multiple paylines and player-selectable denominations. The defining feature is a three-meter persistent state structure visible above the reels — colored blue, green, and red — with each meter feeding a different bonus or jackpot pathway.

Phoenix bird symbols are the high-paying icons on the reels and the trigger components for the top feature. Five gold phoenix birds across the reels award the top feature event — the eruption sequence with the largest credit payouts in the game. Lower phoenix counts and combinations feed into smaller credit awards and free-game triggers.

Fu Blossom is an Everi slot series — Blessings and Prosperity are the two themes — running on a 576-ways game engine with Asian flower-garden art. The base game uses a standard reel layout configured for ways-play rather than fixed paylines, with player-selectable denominations and bet panels.

The defining mechanic is a three-flower persistent collector above the reels. Flowers reside above reels 2, 3, and 4. Any time a pearl symbol lands on reels 2, 3, or 4, it increases the value of the flower directly above it. Each flower has 8 indicators on the stem; if a pearl doesn't land on its corresponding reel during a spin, the indicator drops by one. When all 8 indicators are gone, the flower's value disappears and the slot resets that flower.

Golden Egypt is one of IGT's most widespread persistent-state AP titles — at peak deployment in U.S. casinos, finding a property without one was rare. The base game uses a 5-reel, 4-row layout with 25 paylines paying left-to-right and a flexible bet panel covering five bet levels. The Egyptian art package is built around scarabs, ankhs, the Eye of Horus, and a Pharaoh high-pay symbol that appears in tall stacks during the base game.

The defining mechanic is the Wild Stays 2 Plays feature. Each of the five reels has a two-slot coin meter directly above it. Whenever a Gold Coin symbol lands on a reel, it occupies one of the two slots above that reel. Once a reel accumulates two coins, that entire reel transforms into a fully wild reel for the next two paid spins. Multiple reels can be wild simultaneously, dramatically boosting line-hit potential.

Grand Buddha Link is an IGT slot — sister title to Grand Cat Link — running on a multi-line video cabinet with a persistent multiplier collection mechanic. The base game uses a standard reel layout with player-selectable denominations and bet panels, themed around an Asian temple aesthetic with Buddha statue iconography on the high-paying symbols.

The defining mechanic is line-hit-driven multipliers that lock onto the cabinet and persist for a defined window of spins. When a line wins, the symbols involved in that line hit can transform into multipliers — 3x on the right side of the reels, and 5x, 6x, or 8x on the left side. Once a multiplier is created, it sticks for the next 8 spins, ready to amplify any subsequent line hit that matches the symbol on the multiplier.

Hexbreaker 3 — also stylized Hexbreak3r — is the third entry in IGT's Hexbreaker series, running on a 5-reel video layout with independently expandable reels and a Halloween-themed bad-luck-versus-good-luck art package. Each reel can expand from 3 rows up to 8 rows independently, giving configurations that range from 243 ways to win at the minimum up to 32,768 ways at full expansion. Standard bet panel runs from 80 credits to 400 credits ($0.80 to $4.00 at penny denomination).

Horseshoe symbols are the expansion trigger. An orange horseshoe expands a reel by 1 row; a blue horseshoe expands by 2 or more rows. When a reel reaches 8 rows (the Luck Zone), the player is awarded the prize associated with that reel — a cash prize, the bonus round trigger, or the White Cat progressive jackpot — and that reel resets back to 3 rows. The center reel (reel 3) houses the progressive jackpot.

Jackpot Catcher is an Aristocrat slot built on the Reel Power format — the same 5-reel, 3-row, 243-ways-to-win engine that powers Indian Dreaming and a long line of related Aristocrat titles. Jackpot Catcher is essentially Indian Dreaming with a progressive jackpot feature grafted onto the bonus, which is what moves the title into advantage play territory. It runs on standard Aristocrat upright cabinets with the typical penny-denomination, multi-bet-level configuration found on this platform.

The base game pays for matching symbols scattered across reels left to right under the Reel Power model — no fixed paylines, just any-position scatters across consecutive reels. Wilds appear only on reels 2 and 4. The bonus is triggered by 3, 4, or 5 dream catcher bonus symbols for 10, 15, or 20 free games respectively. During those free games, the wilds on reels 2 and 4 become 3x and 5x multipliers, stacking when they both land in the same way.

Jewel Collection is a Sega Sammy slot — sister title to Golden Beasts/Golden Elements: Brilliant Fortunes — running on a standard video cabinet with multi-line bet structure. The defining structure is four colored jewel meters displayed above the reels: Amethyst (purple), Sapphire (blue), Emerald (green), and Ruby (red). Each meter accumulates extra wilds based on which colored jewel symbols land on the reels during base play.

Each meter awards five extra wilds when its corresponding jewel symbol lands. The Amethyst meter triggers randomly at any time during base play — similar to the blue wilds on Regal Riches. The Sapphire, Emerald, and Ruby meters fire only when their matching free games event is awarded, with the accumulated wilds added to the reel strip during those free spins. Importantly, the wilds are added to the reel strip rather than guaranteed to land on the reels, so a high meter increases the chance of more wilds appearing without locking in the outcome.

Knock Knock Guardians is an AGS slot released in 2024 on the Spectra 43 Core cabinet, with an Egyptian cat-themed presentation and a 7,776-ways-to-win format (six symbols across six positions on five reels). It has been positioned by the manufacturer and gaming press as a perceived-persistence title, which is a meaningful distinction — the visible cabinet state suggests carry-over to the next player, but the underlying random selection limits how cleanly that state translates to deterministic AP value.

The base game runs across the 6-row, 5-reel grid with the 7,776-ways evaluation that gives reasonably consistent low-pay action. The bonus is randomly triggered, and depending on which feature fires the player can land in either a hold-and-spin event with cash and prize symbols or a free games feature with multipliers and added wilds. Multiple-bonus sessions are not unusual on this engine.

Lucky Larry's Lobstermania 4 Link and Super Sally's Shrimpmania 4 Link are the IGT premium follow-ups to the long-running Lobstermania franchise, released in 2022 on the CrystalCurve and PeakSlant49 portrait cabinets (and dual-display variants on Crystal Dual, CrystalSlant, and PeakSlant32). This is the first linkable progressive game in the Lobstermania series, and the Link in the title refers to the shared progressive system that ties the bank together. The base game uses a 30-payline structure with a 75-credit cost-to-cover bet.

The defining mechanic is the loot meter system. Each reel has a loot meter at the top, and during base play any treasure chest symbol that lands on reels 2, 3, or 4 reveals a coin value that floats up and adds to the meter on its corresponding reel. When any one of those loot meters becomes full, a random prize fires — multipliers, wild stacks, the Big Wheel bonus, or another reward depending on the configuration.

Lucky Pick is a Gaming Arts slot family released originally on the Phocus S104 dual-screen cabinet and later expanded to the VertX Grand portrait cabinet and VertX Duo dual-screen cabinet. The series ranks among Eilers' top-performing slots from emerging suppliers — Lucky Pick BumbleBee took the No. 1 spot in September 2023, and the family includes BumbleBee, Leprechaun, and a Cash Tree theme. Gaming Arts explicitly markets Lucky Pick as a true-persistent game, distinguishing it from titles using perceived persistence.

The defining mechanic is a 21-space persistent pick board displayed on the cabinet. During base play, picks are revealed one at a time, building a collection of enhancements — extra free games, win multipliers, and added wilds — that all persist on the board across spins and across player sessions. The board state visible to a player walking up to a cabinet reflects everything previous players have revealed and not yet cashed in.

Magic Treasures is an IGT multi-level progressive slot released on the PeakCurve cabinet, available in two complementary partner themes — Dragon and Tiger — running on the same engine with rich Asian-themed graphics. The base game uses a 5x4 reel set, with the Money Ball Bonus, the Jackpot Bonus, and free games as the three bonus pots that define the title.

The headline mechanic is the Money Ball collection. Money Ball symbols land on the reels and bank into a single visible pot at the top of the cabinet. Each Money Ball carries either a credit value (with possible 2x, 3x, or 5x multipliers applied) or one of three jackpot levels — mini, minor, or maxi. The Money Ball Bonus can trigger randomly on any spin where a Money Ball lands, paying out everything that's been collected in the pot. There is also a separate Jackpot Bonus where players pick to reveal three matching symbols and win the corresponding jackpot tier, with multipliers up to 9x available on the matched jackpot.

Ocean Magic is an IGT video slot, released as a 5-reel, 4-row video slot with up to 50 paylines depending on configuration. The game is built around persistent wild bubbles that randomly start at the bottom of the screen and float up one row per spin until they reach the top and disappear. The bubbles persist between players — bubbles abandoned by a previous player remain on the screen for the next player to capture — which is what makes the title one of the most consistently exploited AP games on the floor.

Two play modes are available: standard play and Bubble Boost. Bubble Boost doubles the bet but adds 1-7 randomly placed bubbles per spin, dramatically increasing the bubble density and the bonus opportunity. The game tracks a separate persistent state per bet level and per mode, so each cabinet can hold up to six independent persistent states (typical configuration).

Pillars of Cash is an AGS slot family running on AGS upright cabinets, available in two themes — Celestial Fortune (dragon-themed) and Festive Fortune (jade and Asian-themed). Both titles run on the same engine with a 3x5 reel set and 30 paylines. The defining presentation is five coin-filled boxes positioned above each reel, with pillars that grow vertically as credit prizes land on the corresponding reels below.

The headline mechanic is the five persistent prize pillars. Each pillar holds a single credit prize value, and as coin symbols land on the corresponding reel, the prize value accumulates and the pillar height grows. Each pillar has a three-dot spin counter visible on the cabinet — landing a coin symbol resets that counter to three. If no coin lands on a pillar's reel and the counter is empty, the pillar drops down one level. If the pillar reaches the bottom, the prize value resets entirely.

Raise the Sails is an IGT slot on the PeakSlant49 cabinet, paired with a complementary Asian-themed sister title called San Xing Riches running on the same engine. Both are 5-reel, 243-ways-to-win video slots with 60-credit cost-to-cover bets at 1¢ denomination and a max bet of 600. Hit frequency runs about 30% and theoretical hold falls in the 11%-13% band. Top award is a progressive with $1,000 reset.

The base game features cash-on-reels symbols. Credit values land on reels 1 through 4, and when a Collect treasure chest symbol lands on reel 5, all credit values across the reel set are awarded immediately. The defining persistent-state mechanic is three independent free-game progression meters, each tied to a different bonus tier. On Raise the Sails the meters are Bronze, Silver, and Gold; on San Xing Riches they are Shou (blue), Fu (green), and Lu (red). Each colored coin landing on the reels increments its corresponding meter.

Rich Little Piggies is a Light & Wonder slot family with two primary land-based variants — Hog Wild and Meal Ticket — plus newer World Class versions. The base game runs as a 5-reel, 25-payline video slot with bet levels at 75, 150, 225, 450, and 600 credits per spin (typically at 1¢ denomination). Three colored piggy banks displayed above the reels — blue, yellow, and red — hold the persistent state that defines the AP angle.

The defining mechanic is three independent progressive free games features, one for each piggy bank. The blue pig builds an increasing number of free games. The yellow pig builds a chance to win the jackpot prizes during the bonus. The red pig builds either guaranteed wilds (Hog Wild version) or a feature where the lowest-paying symbols are removed from the reels (Meal Ticket version).

Star Goddess (full title Star Goddess: Stars of Wealth) is an IGT 2019 release with mechanical heritage from Ocean Magic and Wild Pirates. The base game runs as a 5x4 reel set with 26 paylines (yes, 26 — not a typo). Two bet structures: a base 60-credit bet and a 100-credit Portal Lock bet. Only the Portal Lock bet level retains persistent state. The cabinet shows two progressive jackpots, Mega and Supreme, both available at any bet level. Wu Dragon is the near-clone using the same engine.

The defining mechanic is meteor strikes onto a portal-locked reel set. On any base game spin, between 1 and 20 meteors fire down to the reel grid, each turning a hit position wild. When a meteor hits a portal-bordered position, it transforms a 3x3 block (the bordered position plus its eight surrounding spaces, including diagonals) into wilds. This produces the title's signature massive line hits when borders are clustered on the left side.

Top Up Fortunes is a Sega Sammy slot family with two themed releases: Top Up Fortunes Flame (fire-themed, 5 reels, fixed paylines, RTP 95.5%, released February 2025) and Top Up Fortunes Ocean (Poseidon underwater theme, 243 ways, RTP 95.5%, max win 2,000x, released November 2023). Both run on the same fundamental engine with the Top-Up Bonus as the headline feature.

Sega Sammy is a less prevalent manufacturer in the North American AP community than IGT, Aristocrat, or Light & Wonder. The public AP literature on this title is meaningfully thinner than on the higher-profile persistent-state slots. The general structure includes a Top-Up Bonus that builds value during play and a Free Spins Round, but the specific mechanics for how state persists between players and what triggers the bonus are not as broadly documented in the AP community as for higher-volume titles.

Wheel of Fortune 4D is IGT's flagship Wheel of Fortune persistent-state release, built on the same fundamental Golden Egypt engine but with the iconic wheel feature layered on top. The base game runs as a 5x4 reel set with 75 paylines (matching Golden Egypt's structure). The True 4D technology adds gesture recognition and midair haptics to the cabinet, with linked video screens creating the immersive presentation that distinguishes the title visually.

The defining mechanic is dollar symbol collection per reel. Accumulate two dollar symbols on a single reel and that reel turns wild for the next two spins. The dollar count per reel persists between players, so a cabinet showing one dollar accumulated on a reel is one landing away from a 2-spin wild conversion of that reel. The mechanic is identical to Golden Egypt's wild-reel structure with the cosmetic difference being dollar symbols instead of Egyptian artifacts.

Wheel of Fortune High Roller is an IGT Wheel of Fortune title positioned for higher-denomination play, typically deployed in casino high-limit rooms. The base game runs as a 5-reel video slot with the iconic Wheel of Fortune wheel bonus layered on top. The denomination structure and bet ladder are configured for higher minimum spin investment than the standard WOF 4D titles, which positions the cabinet for players targeting higher per-trigger payoffs.

The defining mechanic shares the WOF family DNA: the wheel bonus from bonus symbols on the reels awards credit prizes or progressive jackpot tiers including the wide-area Wheel of Fortune Megajackpot. Persistent-state elements vary by configuration, but most WOF High Roller variants include either symbol-collection mechanics or pot-style accumulators that bank value during base play.

Wizard of Oz Yellow Brick Road is a WMS / Light & Wonder slot machine using the iconic Wizard of Oz licensed IP, structured around a yellow-brick-road progression mechanic that gives the title its distinctive AP signature. The base game runs as a 5-reel video slot with characters from the Wizard of Oz film (Dorothy, the Scarecrow, the Tin Man, the Cowardly Lion, the Wicked Witch) populating the reels alongside the standard symbol pay structure.

The defining mechanic is the persistent yellow-brick-road progression. Specific symbols landing on the reels (typically character symbols or marked Yellow Brick Road symbols) advance a marker along a visible road display on the cabinet. The road has multiple stages, each tied to a different bonus event — free games, pick bonuses, or progressive jackpot picks corresponding to landmarks along the iconic film's plot path (the cornfield, the witch's castle, the Emerald City, etc.). The marker position persists between players.

Wonder 4 is Aristocrat's enduring multi-game cabinet platform, packaging four base games on a single screen with the option to play any one game across all four boards or to play four different games simultaneously. The original Wonder 4 collection includes Buffalo, Pompeii, Firelight, and Wild Splash. The collection has expanded across multiple cabinet refreshes including Wonder 4 Jackpots ($2 standard bet), Wonder 4 Tall Fortunes (Buffalo Gold, Brazil Gold, Wild Lepre'Coins, Whales of Cash Deluxe), Wonder 4 Spinning Fortunes, Wonder 4 Boost, and Wonder 4 Special Edition.

The defining feature of the Wonder 4 platform is Super Free Games — when triggered with multiple boards activated, the bonus carries multiple boards simultaneously into the free-game event, multiplying per-spin equity dramatically. The base bet structure varies by variant: Wonder 4 Jackpots is a $2 standard with four boards; Wonder 4 Tall Fortunes runs $1.95 because of two 60¢ base games (Buffalo Gold and Miss Kitty Gold); Wonder 4 Spinning Fortunes runs $1.20 with the Whales of Cash Deluxe variant.

Zodiac Lion is an IGT slot machine in the persistent-state portal-lock family that includes Star Goddess: Stars of Wealth, Wu Dragon, and Ocean Magic. The mechanical lineage is similar enough that AP-community discussion frequently references Zodiac Lion alongside Star Goddess when describing the meteor-on-portal mechanic. The base game is structured around a multi-line reel set with portal-bordered positions and a meteor or comet-style visual element that fires positions wild on each spin.

The defining mechanic shares the meteor-strike framework: portal-bordered positions accumulate during play, and meteors / comets / fire-strikes (depending on the title's visual treatment) fire down to the reels each spin. Each strike turns its hit position wild. A strike on a portal-bordered position creates a 3x3 wild block (the bordered position plus its eight surrounding spaces, including diagonals). This is the framework that produces the title's signature large line hits when borders are clustered on the left side of the reels.