Count the number of ships destroyed for later tie-breaking purposes. Ships may exit to avoid being destroyed If the exiting ship is being tracked by seeking weapons then resolve the seeking weapons to see if the target is destroyed i.e. torps that are slower than the fleeing ship go away. Play on the standard map shape. Enter on opposite short edges. Ships can exit safely either along their entering edge or along the adjoining quarter of the two side edges.
Brood can only exit along their entering edge.
No more than 4 of a given ship figure. No restrictions on crew values. Speed torpedoes Consecutive torpedo resolution. Starship explosions create debris. Starships can self-destruct between turns.