Double Diamond is a single-payline three-reel slot from IGT, first released in 1989 — one of the oldest slot machine designs still in active circulation. As the predecessor to Triple Diamond, it established the multiplying wild concept that the later game refined, and it remains the purest expression of the format that defined land-based casino floors for decades.

The game plays on a single payline across three reels with bets from $0.25 to $50. The fruit theme is entirely classic: bars, sevens, and the Double Diamond wild. No bonus round, no Free Spins, no scatters — three reels and one line, with the multiplying wild as the sole mechanical feature. The simplicity is deliberate and defining.

The Double Diamond wild multiplies wins based on how many appear on the payline. One Double Diamond multiplies the win by 2x; two Double Diamonds multiply by 4x. Three Double Diamonds on the single payline represents the game’s maximum event. The multiplier structure is more modest than Triple Diamond’s 27x ceiling, but the core concept is identical — the wild’s presence escalates the win value rather than simply substituting for a missing symbol. That idea, introduced here in 1989, became a foundational mechanic across the industry.

Double Diamond carries a 95.44% RTP and is low volatility. Single payline, frequent small hits, occasional multiplied wins. The maximum win reaches 1,000x your stake from a three-wild payline combination.

Double Diamond is as close to the original article in slot machine history as online play gets. Players who want the authentic 1989 experience, or simply enjoy the meditative simplicity of one line and three reels, will find it exactly what it promises to be — nothing more, and nothing less.