Double Stacks

Double Stacks is a NetEnt slot that has caught on with Irish players who enjoy a clean, retro five reel game with a clever twist. Everything revolves around stacked symbols that can double up, which keeps the action lively from spin to spin. It plays in euro at online casinos, and because plenty of people search for the Double Stacks slot by name, it helps to know exactly how it works and what its key numbers are before you play.

How Double Stacks plays

Double Stacks runs on five reels, three rows and 10 fixed paylines, so every line is always active and there is nothing to switch on or off. Symbols land in tall stacks, and the signature moment arrives when a reel fills completely with a single symbol. Those symbols then double, counting as two in the same spot, so an ordinary five of a kind can grow into a six, seven or even ten of a kind across the grid. Land enough scatters and the free spins round begins, with wilds added to the reels that can appear stacked too, spreading the doubling idea further.

Double Stacks RTP, volatility and max win

The published RTP is 96.1%, around the usual level for a NetEnt title. Most reviewers rate the slot as medium volatility, so wins tend to land at a fairly even pace rather than in rare, huge bursts, while the stacking and free spins still leave room for a standout spin. According to NetEnt, the top payout is worth up to 1,700 times your stake on a single spin, reached when the doubling lines up across a full screen. Medium volatility makes it an easygoing choice for longer sessions with steady action.

Playing Double Stacks in Ireland

You can play Double Stacks in euro at the online casinos listed on this page, all of which offer the game. Ireland's Gambling Regulatory Authority (GRAI) is standing up a domestic licensing regime through 2025 and 2026, and for now Irish players use casinos licensed by respected EU regulators such as the Malta Gaming Authority, so choose an established, reputable operator. If you would rather look first, the free demo runs in your browser with no account and no deposit.

Is Double Stacks worth playing?

Double Stacks is a neat, good looking NetEnt slot that rewards patience with its doubling mechanic and a genuinely exciting free spins round, and a 96.1% RTP with medium volatility keeps it approachable. It will not suit anyone chasing extreme swings, but as an everyday slot it holds up well. Whatever you play, set a budget and stick to it, and read our responsible gambling guide.