The Slot Machine – Cluster Tumble uses the cluster system to make wins. The game grid is 8×8, with many positions blocked by stone blocks, which the player can blast away during the spins. If a winning combination appears on four adjacent cells, the Tumble feature will begin and players will be awarded with a series of free spins. The bonus feature is active for a specified amount of time and can even last for days.
The game features a simple layout and decent gameplay. There are five paylines and you can play for as little as 10p per spin. A win of 20,000x your stake is highly likely to come during the free spins, with the multiplier increasing by three every time you clear a cluster. Also, the Lightning Win and Fire Transform feature can be very profitable, as they replace your target symbol to form a win. These features are available only in certain countries.
The theme of the game is a sweeping Asian adventure set in the rocky and hostile terrains of the Himalayas. The male protagonist, from a previous Relax Gaming slot, is missing, and a female explorer sets out to find him. Her search for her missing husband takes her to hidden ruins and reveals secrets. The game's soundtrack is adventurous, with the sound effects of a series of cascading sequences.