Warhammer 40K: Dawn of War Soulstorm , from: THQ

In the 41st Millennium, you have the power to wage war across entire solar systems. This is a dark, futuristic, fantasy setting where armies of technologically advanced warriors, fighting machines and hordes of implacable aliens wage constant war. Liberate, enslave, or destroy entire worlds as you unleash your army's fury on an interplanetary scale. Take command of two new factions, the Sisters of Battle and the Dark Eldar, and fight with a new resource derived from the souls of the faithful and the fallen. Take to the skies as you gains new air units to rain death from above. Experience unique storylines, control your supply lines and lead any one of nine separate armies to victory.

Windows 2000/XP 2.4 GHz Intel Pentium 4 or equivalent 512 MB System RAM (required for 8-player multiplayer games) NVIDIA GeForce 3 or equivalent with 64 MB of Video RAM Sound Blaster X-Fi.