The player controls a spaceship armed with lasers and shields on a mission to destroy the Cosmic Chasm space station from the inside out.

Each room of the space station has protector ships that attack the player directly and a center that slowly expands thus forcing the player not to linger in the room for too long after defeating the protector ships.

The player must shoot away force fields that protect the exits in order to traverse the corridors that lead to other rooms.

Each exit corresponds to a different direction on the map so choosing the shortest route is key.

It is a separate screen that appears before each round of play begins or when the player exits a room.