Double Stacks Slot
The good old classic slot machines are currently on the rebound with many providers redesigning those early forms of reel slots and giving them the 21st-century treatment. After releasing the retro-modern and highly volatile Swipe & Roll game, NetEnt has taken on the traditional fruit theme in its next creation. Fruits, sevens and bars are populating the reels on Double Stacks to produce wins of up to 1,000x the stake on a single spin.
Classic Reels, Symbols and Sounds
A simple but extremely focused classic game window in dark colors greets players after loading the slot. Crisp graphics and seamless animations display the high standard of NetEnt games. A pleasant percussion soundtrack is only interrupted by the usual win and teaser sounds. Four windows above the game grid show the top pay for each of the main symbols.
The classic theme continues with the pay symbols. At the low level in ascending order of value are non-stacked melons, lemons, plums and cherries. The four main symbols which can appear stacked are bells, the Bar, sevens and diamonds. The wild symbol is a gold star with the word “Wild” across it, substituting for all symbols except scatters. It appears stacked during the free spins feature only. Bonus symbols are represented by a glittering circle in vibrant colors marked with the word “scatter”. A minimum of three are needed to trigger the free spins feature.
Modern Stats and Numbers
Double Stacks is a video slot in HTML5 format with five reels, three rows and 10 fixed paylines. The game features wild substitutions, a Double Stacks feature and a free spins round with double stacked wild symbols. Wins for a single five-of-a-kind range from 2x to 4.5x the bet, which can go up to a ten-of-a-kind when double stacked premium symbols appear, increasing the pays to between 10x and 100x your stake.
The RTP of this low-to-medium-variance game is set at 96.10%, with a maximum win on a single spin of exactly 1,000x the stake for landing a full screen of double diamonds or a combination of diamonds and wild symbols. The bet sizes start at a low-roller-friendly 0.10 coins and peak at 100 coins, and these are easily adjustable with the usual NetEnt controls. Double Stacks is available for play on desktop, mobile and tablet across all OS platforms.
Double Stacks for Double the Fun
The main attraction on this NetEnt slot is the double stacked pay symbols. During the base game, only the four premium symbols can appear stacked, while during free spins the wild symbol can also land stacked. Hitting a full stack on a reel will double the symbols from three to six. The low-value symbols never appear stacked.
Once a full stack lands on a reel, the respective symbol will double on the same reel. One symbol will count as two symbols. If the stack is on reel one, then only one more is needed on a payline on reel two to score a three-of-a-kind. Having five double symbols on a payline will award a win for a ten-of-a-kind.
More Stacks in the Free Spins
Three, four or five scatters anywhere on the reels in one spin will award 5, 15 and 30 free spins. More free spins can be won indefinitely during the feature, when two to five scatters land during free spins. An additional 2 to 30 free spins are awarded for each occurrence. No multiplier is active in free spins. On top of the premium symbols, the wild symbol will also appear stacked. If it covers an entire reel on a spin, it will double each symbol on every reel position. Payouts for wild symbols are similar to those for diamonds.
Treasures on Other Reels
Got a taste for retro-modern chic and classic stacked reels? Then Quick Hit Platinum from Bally or Fruit Stack Super Double Wild from Cayetano Gaming might offer some other good choices for you. For fans of fruity reel adventures and high jackpot pays, we can recommend Novomatic’s Amazing Fruits, which features a localized progressive jackpot.
The Final Verdict
Hit or miss? Is Double Stacks a welcome blast from the past? Classic and simple fruit machine enthusiasts will most certainly answer yes. The game plays well and boasts super-crisp graphics, a pleasant soundtrack and a decent top pay of 1,000x your bet. However, fans of feature-laden games will be rather disappointed. A simple free spins round won’t satiate their hunger for head-turning random features or heart-stopping bonus rounds.
Overall, the slot deserves a few spins once in a while. The low-to-medium volatility will produce frequent small-to-medium wins to provide for plenty of play time. And who knows, you might get your hands on that coveted top pay for a full screen of diamonds.
