Halo: Combat Evolved
Free to try; $49.99 to buy
Windows 98/Me/2000/XP, DirectX 9 drivers.
One single-player mission, one multiplayer map
Publisher's description of Halo: Combat Evolved
Bent on humankind's extermination, a powerful fellowship of alien races known as the Covenant is wiping out the Earth's fledgling interstellar empire. You and the other surviving defenders of a devastated colony-world make a desperate attempt to lure the alien fleet away from Earth. Shot down and marooned on the ancient ring-world Halo, you begin a guerrilla war against the Covenant. Fight for humanity against an alien onslaught as you race to uncover the mysteries of Halo.