Characters start an action scene during sex, and generally they try to inflict mental or emotional stress on each other in hopes of getting some kind of psychological advantage or forcing their opponent to orgasm strongly or something.  If you wanted, you could also have demolition sex that levels several hundred miles of terrain using superhuman powers, which would also count as combat sex.<br/><br/><br/>You guys can start picking teams, if you like; at the start of the game, Los Angeles and Tokyo are both under attack from a group of Superhumans, who destroyed Moscow the previous day.