Halo 2 XBox

Widely regarded as the best first-person shoot-'em-up ever made for a home console, Halo 2 follows in its forebear's footsteps with a perfect blend of single and multiplayer action. The former offers far more variety than the first game as the battle is brought to Earth and the incredible advances in the game's AI, as well as just its graphics, become immediately obvious. There are now a lot more friendly troops to help you out and the evil Covenant invaders have become even more organised and intelligent.

In the all-important multiplayer mode, the most significant change is that you can now play the game online on Xbox Live against anyone in the world. This is the feature fans have been clamouring for and it's supplemented by new gameplay features such as the ability to steal vehicles, man fixed gun emplacements and play as the bad guys. If you don't yet own an Xbox, Halo 2 is all the reason you need to change that.—Harrison Dent

Halo 2 surpasses its predecessor both in graphical beauty and combat intensity. The Master Chief and his marine allies return to battle the full complement of Covenant forces, as well as new enemies who have not yet revealed themselves. Halo 2 also expands the Master Chief's already-substantial arsenal with powerful new weapons, many pried from the twitching claws of defeated enemies, as well as more than twice as many drivable vehicles for exploring vast landscapes or speeding into battle. In addition to its epic single-player campaign, Halo 2 will be playable online through Xbox Live.