Yags SciFi is a genre specifically designed to allow for space combat, in a way that is interesting for players and suitable for games modelled on science fiction TV, books and films. It is probably slightly harder than the sort of space combat often portrayed by Hollywood, but would be suitable for series such as Babylon 5 or the re-imagined Battlestar Galactica.

Space is big, sometimes it's too big. There isn't much out there between the stars, indeed, there isn't much between the planets either. Any realistic portrayal of asteroid fields is also going to be disappointing to anyone whose expectations have been raised by watching The Empire Strikes Back.

As such, there's not much to fight over in deep space and physics and maths mean that the chances of two fleets meeting up in the middle of nowhere is pretty slim. Most battles are going to be fought close to a planet or similar resource.