Gem Crush is a six-reel slot from NetEnt with a medium-high volatility profile and an RTP of 96.1%. Wins are formed through Cluster Pays, where five or more matching symbols connect horizontally or vertically. The Avalanche feature removes winning symbols and lets new ones fall into place, creating the chance for successive wins on the same spin.
The game includes Wild symbols that substitute for most icons, while the Rainbow Gem changes one symbol type into another and can remain active through avalanches. XStrike Multiplier may appear in the base game and Free Spins, applying a global multiplier of x2, x3, x4 or x5 for the current spin. Bet levels range from 0.1 to 20.
Three Bonus symbols trigger 10 Free Spins, where the Colossal Wild covers a 2x2 area and the multiplier increases every second spin. The bonus also allows repeated Rainbow Gem transformations. A demo version is available to play for free, which lets users practice before playing for real money and observe the main mechanics before placing a stake.