Hell has frozen over, and AvatarUX just shipped the demons. GamDoom is a Gamdom-exclusive video slot that borrows its soul from 1990s first-person shooters and bolts on the studio's PopWins expansion mechanic alongside a new horizontal ZapReel system.
Five reels, up to 118,098 ways to win, high volatility, and multipliers reaching 100x in the Gamdom-exclusive Big Freaking Buy. The Free Spins round pushes reels up to nine rows tall.
The max win sits at 50,000x the bet, which places GamDoom firmly at the aggressive end of what AvatarUX has produced to date.
If there are any remaining doubts about whether this one is worth your attention, keep reading. Everything gets pulled apart in detail below.
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AvatarUX built GamDoom around the visual language of the 1993 DOOM franchise. The reels are populated with pixelated soldiers, demons, weapons, and ammunition drawn directly from classic FPS iconography.
The grid sits against a ruined industrial hellscape rendered in the gritty palette of 90s PC gaming. The result is a slot that functions as both a tribute to gaming history and a mechanically dense AvatarUX release.
| Field | Detail |
| Software | AvatarUX |
| Game Type | Video Slot (Gamdom Exclusive) |
| Reels / Rows | 5 reels, 3-7 rows base (up to 9 in Free Spins) |
| Ways to Win | Up to 118,098 |
| RTP | 95.97% (up to 96.31%) |
| Volatility | High |
| Min Bet | $0.10 |
| Max Bet | $100.00 |
| Max Win | 50,000x the bet |
| Jackpot | None |
*Subject to change
The base RTP is 95.97%, rising to 96.31% depending on configuration. Both figures sit above the slot average. Volatility is high, meaning base-game sessions run lean and the bulk of the return is concentrated inside Free Spins and ZapReel multiplier chains. Players should budget for extended dry stretches between significant wins.
GamDoom plays from $0.10 to $100 per spin, covering casual low-stakes sessions through to high-roller play. All bonus buy costs scale with the base bet, so setting your stake before selecting any purchase option is essential.
The maximum win in GamDoom is 50,000x the bet. Reaching it requires deep multiplier stacking from the ZapReel during an extended Free Spins chain with reels at full 9-row expansion.
Every winning symbol pops and is replaced by two new symbols, expanding that reel by one row. In the base game, reels can grow to 6 rows tall. In Free Spins, they extend to 9. The chain continues as long as new wins form. Free Spins are triggered by expanding all reels to 6 symbols high in the base game, at which point the bonus round begins with reels already at full base-game height.
A horizontal 3-cell reel sits above the main grid. Each spin, the ZapReel displays special rewards that apply to the reels directly below. Rewards reset with every new spin.
In the base game, ZapReel rewards include multipliers of 2x and 3x, Split Symbols generating up to 5 identical symbols per cell, an Expand the Winning Symbol feature that covers entire reels, and a Synced Reel reward that aligns adjacent reels.
During Free Spins, all rewards are upgraded: multipliers extend to 2x, 3x, 5x, and 10x (up to 100x in the Big Freaking Buy), Split Symbols can produce up to 10 identical symbols per cell, and Synced Reels can align up to 3 adjacent reels simultaneously.
All values below are based on a $1 bet.
| Symbol | 5-of-a-kind | 4-of-a-kind | 3-of-a-kind |
| Red Soldier | 1.5x bet | 1x bet | 0.5x bet |
| Snake | 1.5x bet | 1x bet | 0.5x bet |
| Purple Imp | 1.5x bet | 1x bet | 0.5x bet |
| Green Monster | 1.5x bet | 1x bet | 0.5x bet |
| Ammunition | 1x bet | 0.6x bet | 0.3x bet |
| Green Robot | 1x bet | 0.6x bet | 0.3x bet |
| Rifle | 1x bet | 0.6x bet | 0.3x bet |
| A / K / Q / J / 10 / 9 | 0.6x bet | 0.3x bet | 0.2x bet |
Triggered by expanding all five reels to 6 rows in the base game. The bonus round opens with reels already at 6-row height and can expand further to 9 rows via the PopWins mechanic.
Reel height does not fully reset between Free Spins; instead, it drops to the shortest active reel height, preserving partial progression throughout the feature. ZapReel rewards are upgraded for the entire duration of Free Spins.
Before Free Spins begin, the Alien Wheel offers a gamble mechanic. Starting from 6 free spins, successful outcomes on the wheel can increase the count to 9, 12, and potentially 18 if a Golden Field lands.
A failed gamble returns the player to the base game with no Free Spins awarded. The Alien Wheel costs 125x the base bet as a standalone activation.
Four purchase options are available, all costs based on a $1 base bet.
| Option | Cost | Effect |
| Standard Bonus | $250 | 6 Free Spins with 15,552 ways to win |
| Alien Wheel | $250 | Gamble wheel for up to 18 Free Spins |
| Big Freaking Buy | $300 | 6 Free Spins with ZapReel multipliers up to 100x (Gamdom exclusive) |
| Bonus Max | $1,000 | 12 Free Spins with 15,552 ways to win |
The GamDoom demo is available on Gamdom without registration. High volatility plus the ZapReel layer means this game has more moving parts than a standard PopWins title. Run the demo before committing real funds.
GamDoom runs in-browser on iOS and Android. The expanding grid scales cleanly in portrait mode, fully expanding to 9 rows during Free Spins, and the ZapReel remains legible above the main grid on mobile screen sizes. No app download is required on Gamdom.
The ZapReel resets every spin, but its rewards apply to specific reels. Before spinning, note which columns have multipliers or Split Symbols assigned.
A multiplier landing above a reel that then triggers a PopWins chain is where the largest base-game returns originate. During Free Spins, this awareness is even more valuable since multipliers can reach 10x or 100x.
The Big Freaking Buy at $300 is the only route to 100x ZapReel multipliers. At minimum bet, that is $30 per activation. Decide before your session how many activations are in scope and treat that as a hard limit.
The standard $250 bonus buy offers six free spins without the enhanced multiplier tier and is a more conservative entry point for players testing the feature for the first time.
GamDoom 2: This is AvatarUX's follow-up to the Gamdom exclusive, keeping the PopWins engine and ZapReel mechanic while adding ante bet options that push the RTP from 96.04% up to 96.32%.
LooneyPop: AvatarUX's cartoon-themed PopWins slot. Shares the core mechanic and the reel-height progression system. A useful step-down for sessions where the high-volatility intensity of GamDoom feels too demanding.
Nugget: Another AvatarUX release built on the PopWins foundation. Different theme and symbol set, same expanding-chain logic. Suitable for players who want to explore the full AvatarUX PopWins catalogue.
The ZapReel adds genuine per-spin variance on top of the expansion chain, and the 50,000x ceiling backed by 100x multipliers in the Big Freaking Buy gives the feature real teeth. For players willing to engage with both mechanics, it delivers a slot experience that goes well beyond the standard PopWins template.
AvatarUX built GamDoom to be entertaining, and it does that job well. Sessions can move fast, so it’s easy to lose track of time. Ripping and tearing through demon hordes is fun right up until the point the session runs longer or costs more than planned.
Set a deposit or loss limit before loading the game and treat it as a hard stop. If you want to keep on playing, simply switch to GamDoom's demo mode.
If gambling is becoming harder to manage, GamCare and Gamblers Anonymous both offer practical support. Gamdom's self-exclusion feature is also available for players who need to step away from the platform entirely.
Expand all five reels to 6 rows tall through the PopWins mechanic in the base game. Alternatively, purchase direct entry via one of the four bonus buy options.
A Gamdom-exclusive bonus buy option costing $300 at a $1 base bet. It awards 6 Free Spins with ZapReel multipliers enhanced up to 100x, the only configuration in GamDoom where 100x multipliers are available.
There are 20+ exclusive games on the site, but Gamdom continues to expand its library. In addition to those, there are also Gamdom Originals, built by the in-house team. Each of them provides an exceptional gaming experience and enhanced fairness through the use of Provably Fair tech.
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