Space Gems. Rockblocks

Developed by Mascot, Space Gems. Rockblocks is a video slot that features a unique 6×6 grid instead of conventional paylines. Wins occur when clusters of five or more identical symbols connect on at least one side, a feature known as the Rockblocks mechanic. When a winning cluster is formed, the Rockfall feature activates, removing those symbols and allowing new ones to drop in, potentially leading to additional wins in a cascading manner. The game includes two special symbols that enhance gameplay: the Astronaut, which provides a random coin prize when clustered, and the UFO, which introduces random multipliers. During a Rockfall sequence, all multipliers from UFO symbols are summed and applied to the total win for that round. Players can engage in an optional Risk Game after any win, which involves a wheel-based gamble that can further increase the win up to a maximum limit. Notably, this game does not include free spins; there are no scatter symbols to trigger free spins rounds, nor is there an option to buy bonuses. Through its cluster pays, cascading mechanics, special symbols, and Risk Game, Space Gems. Rockblocks effectively captures the theme of gem collecting in space while offering a range of bonus features rooted in the base gameplay.

You can play it for real money.