Aristeia

Aristeia is an asymmetric cooperative multiplayer action-puzzle-platformer. Two players, each having access to different tools, must work together to accomplish goals (like pressing buttons and going through doors). One player, the Platformer, moves about the level and shoots at enemies and other targets, and the other player, the Artist, uses the mouse to draw platforms and otherwise interact with the environment to aid the Platformer in accomplishing his goals. They are helped and hindered in this by the frequent presence of various crystals that affect the nature of the game's rules in a variety of ways.