12 Treasures: Aztec Riches is an Aztec-themed slot from Penguin King with a 4x3 grid and no traditional paylines. Every payout in the game comes exclusively from the Hold and Win bonus, which triggers with unusual frequency at roughly once every 36 spins.
Low volatility, a 2,500x maximum win, and four coin tiers with multiplier effects make this one of the more streamlined Hold and Win releases in the Penguin King catalogue.
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Penguin King built this slot around an Aztec Empire setting rendered against deep blue ruins and gold-accented stonework. The reels carry no traditional paying symbols at all; the entire visual identity is constructed around four tiers of coin symbols, each one a different material from bronze to diamond.
Four jackpot meters sit above the grid, climbing toward the Grand Jackpot as coins accumulate. The result is one of the most single-minded Hold and Win designs in the provider's lineup, where every base-game spin exists solely to trigger the bonus.
| Field | Detail |
| Software | Penguin King |
| Game Type | Video Slot |
| Reels / Rows | 4x3 (12 positions) |
| Paylines | None (Hold and Win only) |
| RTP | 95.76% |
| Volatility | Low |
| Min Bet | $0.10 |
| Max Bet | $500.00 |
| Max Win | 2,500x |
| Jackpot | None (fixed jackpots in bonus) |
*Subject to change
The base RTP is 95.76%, rising to 95.84% when the Feature Buy is used. Low volatility reflects the unusually high bonus trigger frequency of approximately once every 36 spins.
12 Treasures: Aztec Riches accepts bets from $0.10 to $500 per spin. The Feature Buy costs 40x the base bet, which at minimum stake is $4 per direct bonus entry. Double Chance costs 2x the base bet per spin and doubles the feature trigger probability.
The simulated maximum win is 2,500x the bet.
The base game produces no wins from symbol combinations. There are no paylines, no scatter payouts, and no wild substitutions in the traditional sense. The only purpose of base-game spins is to land coin symbols that trigger the Hold and Win feature.
A single coin landing has a chance to trigger the bonus immediately. The feature also triggers automatically if the entire middle row of four positions fills with coin symbols in the same spin.
The Hold and Win feature starts with 3 respins. Every coin symbol that lands is locked in position and resets the spin count back to 3. During each respin, any newly landed coin has a chance to spawn up to 3 additional Silver, Gold, or Diamond Coins into adjacent or nearby positions.
The feature ends when the respin count reaches zero or all 12 grid positions are filled. All locked coin values are revealed and paid out at feature end.
| Coin Type | Prize on Reveal |
| Bronze Coin | Cash prize of 1x, 2x, 3x, or 4x the bet |
| Silver Coin | Cash prize of 5x, 6x, 7x, 8x, or 9x the bet |
| Gold Coin | 10x cash prize OR 2x multiplier to all coins OR 5x multiplier to all coins |
| Diamond Coin | Reveals Mini, Minor, or Major jackpot label |
Gold Coin multipliers apply to all Bronze and Silver Coin cash prizes on the grid, excluding jackpot values. Multiple Gold Coins can stack their multipliers across the same feature.
When a Gold Coin lands during a base-game spin outside of the Hold and Win feature, all currently visible coins lock in place, and the reels respin once per Gold Coin that landed. This creates a short respin sequence that can populate more positions before the Hold and Win feature potentially triggers, without consuming the bonus's own respin counter.
| Jackpot | Value | Trigger |
| Mini | 25x the bet | Diamond Coin reveals Mini label |
| Minor | 50x the bet | Diamond Coin reveals Minor label |
| Major | 100x the bet | Diamond Coin reveals Major label |
| Grand | 1,000x the bet | All 12 grid positions filled |
Double Chance costs 2x the base bet per spin and doubles the probability of triggering the Hold and Win feature, raising the RTP to 95.84%. Feature Buy provides direct bonus entry at 40x the base bet with the same 95.84% RTP. At $0.10 per spin, Feature Buy costs $4 per activation, making it one of the lower-cost direct bonus entries in the Penguin King catalogue.
12 Treasures: Aztec Riches runs in-browser on iOS and Android without a dedicated app. The compact 4x3 grid is one of the most mobile-friendly layouts in the Penguin King catalogue, scaling cleanly in portrait mode with the jackpot meters and coin reveals clearly readable on mid-range screens.
Register a free account at Gamdom.com. Deposit crypto using Bitcoin, Ethereum, or another supported coin. Search "12 Treasures: Aztec Riches" in the casino lobby. Set your bet between $0.10 and $500 and spin. Withdraw winnings in crypto with no processing delays.
Gold Coins that reveal a 2x or 5x multiplier apply that multiplier to all Bronze and Silver Coin cash prizes already locked on the grid at the time of reveal. A Gold Coin that lands early in the feature, before the grid fills further, multiplies a smaller pool.
One landing late, after a dense board, multiplies a much larger total. The order of coin reveals matters more in this game than in Hold and Win titles where multipliers apply only to adjacent positions.
At 40x the base bet and $0.10 minimum stake, Feature Buy costs $4 per bonus entry. The base-game trigger frequency of 1 in 36 spins at $0.10 per spin costs an average of $3.60 in stake to reach the same trigger naturally.
The Feature Buy is marginally more expensive than natural play on average but eliminates the variance around that average, making it practical for players who want a predictable number of bonus activations per session rather than a variable cycle.
3 Pyramids of Gold: Hold and Win: A larger 5x4 Penguin King Hold and Win title with three pyramid effect symbols adding Collect, Mystery, and Double modifiers to the bonus. Higher jackpot ceiling at 6,134x max win for players who want more grid coverage and a bigger upside from the same mechanic.
3 Energy Diamonds: Hold and Win: Another Penguin King Hold and Win title with Increase, Collect, and Expand energy diamond effects on a 5x3 grid. Comparable low-volatility profile with a different special symbol dynamic and a 5,200x ceiling.
777 Hot Reels: Supercharged: A Penguin King classic-themed slot that steps away from the Hold and Win format entirely, featuring the 777 Lines mechanic, three growing jackpots, and a Free Spins round with 7s symbol transformations.
12 Treasures: Aztec Riches is the most stripped-back Hold and Win title in the Penguin King catalogue. For those who want bonuses to arrive frequently and without interruption from base-game noise, the 1-in-36 trigger rate and 40x Feature Buy make it a practical choice.
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No. The game has no paylines and produces no wins from symbol combinations in the base game. All payouts come exclusively from the Hold and Win feature.
Any coin symbol that lands has a chance to trigger the feature immediately. It also triggers automatically if the entire middle row fills with four coin symbols in the same spin.
The Grand Jackpot is worth 1,000x the bet and is awarded when all 12 grid positions are filled with locked symbols during a single Hold and Win feature.
Gold Coins reveal one of three outcomes during the feature: a 10x cash prize, a 2x multiplier applied to all Bronze and Silver Coin values on the grid, or a 5x multiplier applied to all Bronze and Silver Coin values on the grid. Jackpot values are not affected by multipliers.