The village of Diacris, home of the Gullocks, was changed for the worst when a meteor corrupted its guardian crystal. It then falls to Squish to purify the life crystal and free his fellow Gullocks from the meteorite's corruption.

Squish and the Corrupted Crystal is a fast paced sidescrolling platformer that features high speed mechanics, form switching and minor puzzle elements. The game focuses on collecting crystals to access new areas, overcoming obstacles by using momentum and switching forms.