The game is played on custom bar coasters bearing the image of a Galilean moon on one side and a rules summary on the other. The coasters are designed for use as actual coasters as well as game boards, and the game does not use anything unlikely to be in a bar (such as dice).
Each coaster represents a space colony with four "factories", four "control points" and one "teleporter". Each player takes seven distinctive counters - for example, coins of the same denomination - and places them on their coaster.
Players take turns to move. Each turn, they may Teleport, Build, or Move.
Each player has a special power, depending on their coaster. The first player to teleport a counter back onto their own coaster wins.