Avalanche is for 1 or 2 players, alternating turns. There are six rows of rocks at the top of the screen. The game starts with a six-storied platform and the player loses one platform per row of rocks cleared. The player scores points for the rocks they prevent from reaching the ground. The further the row of rocks, the smaller and faster they become. The ultimate goal is to get enough points so that the player can continue the game should they lose their first one.