Move your Banzai Worm around avoiding all bombs and stuff. Pick up little dots that give you the power to grow.
Don't touch the wall or you'll be a dead Banzai Worm. How long can you keep up with your growing Banzai Worm?
A context menu should be shown when right-clicking or, on touch devices, long-pressing in the game. This menu especially allows to play in full screen and control the volume.