Capture Elemental Particles in order to power the Zodiac Reactor, an ancient device capable of creating stars! Be sure to try Terminal Velocity mode after you practice!
Use the arrow keys to capture Elemental particles as they enter the center of the reactor.
Up=Red, Right=Green, Down=White, Left=Blue.
Press (Spacebar) to control reactor shield.
Press (P) to Pause.
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.