Use the Arrow Keys/WASD to move and jump. Reach the portal to complete levels.

Every time you jump, the level changes: Platforms disappear after one jump and reappear after another. Time jumps carefully to avoid falls! Larger blocks in later levels remain stable. And make sure not to touch the spikes...

If you're failing a lot, click "Hint" in the top left corner of the screen to see a walkthrough!