Shattered Horizon is an interesting game, solid technically and genuinely quite fun. However, the time of its release has put the biggest dent in an otherwise solid foundation, and some strange exclusions mean that it falls short of greatness by a wide margin.
Shattered Horizon is an online multiplayer FPS, in a similar vein to the seminal Counter Strike. Players take on the role of an ISA or MMC soldier, are strapped in a spacesuit with a thruster pack and given a rifle with a scope and a grenade attachment. From being in the spacesuit, you can probably guess that yes, this game happens in space. The maps are based around space stations or asteroid fields and the physics of being in the vacuum of space does give the gameplay a genuine twist.