On 2 CDs (or Scenario cards if you don't have a CD player available) are ten minutes long soundtracks that represent central computer announcements about the presence of various threats. These vary from space battleships and interceptors to different interstellar monsters and abominations, asteroids or even intruders and malfunctions on the spaceship. Players have to agree who will take care of which task and coordinate their actions (moving around the ship, firing weapons, distributing energy, using battlebots to deal with intruders, launching guided missiles etc.) in real time to defend the ship. Only a well-working team can survive 10 minutes and make the jump back to safety.
The game offers several difficulty levels, huge variability and a unique experience for two to five player teams. One mission lasts only about 30 minutes, including setup and evaluation.