[2] Players can play as various alien forces, each of which have different weapons and tables of organization and equipment (TOE's).
[1] On a player's turn, they can move and fire and must choose the order these operations.
[3] There are a variety of weapons, each of which have different ranges, blast radii, damage, and effects (such as smoke).
According to Shannon Appelcline, "The Space Gamer #6 ( June/July 1976) [was] the first issue to offer up substantial articles on other publishers' games — including discussions of McEwan Miniatures' Starguard!
It can be played fully with the existing weaponry, or it can be expanded to include any weapon imaginable.