Double Stacks is a free online slot machine developed by NetEnt with two functions that are exclusively intended for this particular game and symbols are collected and piled up. To go further, we recommend that you first test the demo version of the game without downloading and then seek to win fabulous bonus rewards and prizes from your tablet, computer, and mobile. Full review with RTP and bonuses you will find below.
Double Stacks characteristics
| Feature | Details |
|---|---|
| Title | Double Stacks |
| Developer | NetEnt |
| RTP | 96.03 % |
| Theme | Fruits |
| Reels | 5 |
| Rows | 3 |
| Hit rate | ~16 % base, free spins ~0.36 % |
| Paylines | 10 fixed |
| Lines pay | 3+ matching symbols L→R per line |
| Min bet | €0.10/$0.10 |
| Max bet | €200/$200 |
| Coin Values | €0.01–€2 |
| Maximum Win | Up to 1,000× stake per spin |
| Autoplay | Yes (up to 1,000 spins, with stop options) |
| Free spins | Yes — 5/15/30 spins triggered by 3/4/5 scatters; retriggers add more spins |
| Multiplier | Implicit via “Double Stacks” feature doubling symbol counts |
| Bonus round | Double stacks, Stacked wilds |
| Progressive jackpot | No |
| Fixed jackpot | No |
| Volatility | Medium–high |
| Release | 2018 |
Symbols
The main symbols are represented by different traditional fruits like watermelons, plums, lemons, cherries, and secondary symbols such as the seven bells and bars. The highest paying symbol in the game is the diamond, x10 on the screen gives you access to 1,000 demo points as a prize. On this page, you will find our new slots for free play.
Bonus Double Stacks slot
Three scatter symbols on the screen give you merits with 5 free games, 4 give you up to 15 free spins, and 5 of them give you up to 30 free spins. This game comes with a Free Spins function (which is played when you have at least 3 scatters anywhere on the reels. 3, 4 or 5 disco ball dispersions will give you merits respectively with 5, 15, or 30.
During the functionality, you will see the wild symbol on the reels or in the stacks. This makes it easier to fill the reels with 1 symbol, which is specific and detailed. You have the possibility of acting, suddenly determining, or setting in motion the function having had 2, 3, 4, or 5 diffusers. This will give you 2, 5, 15, or 30 free spins that serve as a supplement, which are added.
🔔 Interesting Fact: Double Stacks’ free spins reward stacked Wilds—these wild stacks can combine with the Double Stacks mechanic to effectively create 10-of-a-kind wins, drastically amplifying payouts during bonus rounds.
Similar slots
- Starburst – 5×3, 10 paylines; expanding wilds lock and respin, win-both-ways, RTP 96.09%, low volatility; iconic arcade vibe.
- Twin Spin Deluxe – 6×5 cluster pays; synchronized Twin Reels, high volatility, up to 10,000× stake max win; retro neon fruit aesthetic.
- Berryburst – 5×3 cluster slot; expanding wilds with respins, vibrant fruit visuals; low–medium volatility, up to 5,000× stake win.
These titles share retro-styled symbols, strong wild mechanics, and engaging bonus features that echo Double Stacks’ core personality.
Summary
Double Stacks™ is a 5×3, 10-line NetEnt slot that combines classic fruit-machine with modern mechanics. Its signature Double Stacks feature doubles symbol counts on full-symbol reels, enabling profitable winning combinations like 10-of-a-kind. Free spins allow stacked Wilds and retriggers, with top wins reaching 1,000× stake.
Pros
- Unique Double Stacks doubling symbol counts per reel
- Up to 30 free spins with stacked Wilds and retriggers
Cons
- High volatility can lead to long sessions without wins
- No multipliers or varied bonus games
- Only 10 paylines
User Review
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