Up arrow to jump, left and right arrow keys to move. When you die, press space to restart. The lasers that the evil butterfly's shoot will kill you and so will the spikes near the edge.
Note: This game is never ending, so you can get infinite score if you want to. Update, wednesday, august 28: Finally a new update! After a certain amount of time being alive, more lasers will start to shoot at you, adding a bit of challenge to late game.