A simple deathmatch between two spaceships. You can choose two power-ups from a selection that includes a variety of missiles, shields and cloaking devices, and then fight against the computer AI or a human player, with difficulty ranging from 'sitting duck' to 'very dangerous'.
The physics are very simplified, with both spacecraft quickly reaching a maximum speed and continuing at that speed until they change direction. Since the playing field is wraparound and empty of obstacles, both ships can continue to navigate indefinitely.