Avalanche is an arcade game designed by Dennis Koble and released by Atari Inc. in 1978. The object is to catch falling rocks with a controllable set of paddles that diminish in number and size as the rocks fall faster and faster. The concept gained a much wider audience after Activision released an unauthorized adaptation in 1981 as Kaboom! for the Atari 2600.
Dennis Koble's official port of Avalanche for the Atari 8-bit computers was sold through the Atari Program Exchange instead of official …