My favourite game and the best multiplayer ever conceived.
When I first started the game the graphics was the first thing I realised. They are amazing. From the way the light reflects of your armour to how realistically the characters move helps draw you in to the immersive world of Halo. The only drawback to this is how the graphics map on to objects and NPCs in real time resulting in some odd moments.The world around you is very interactive with crates flying about to vehicles bouncing around after being hit by a rocket. The Havok physics work really well to make you feel like you have an impact in the world around you.
Campaign:
The campaign is an epic story with some intresting cutscenes but it was a bit too short. Once things started to escalate the geme ended on a very frustrating cliffhanger. Playing the cmpaign is very fun due to the wide array of weapons, vehicles, enemies and scenarios.
Multiplayer:
This is one of the best multiplayer games ever. With 4 mates it's a great laugh, but go online and you have endless oppurtunities of laughs and a chance to show off your skills and PWN noobs. A great feature is the ability to form a clan allowing you and a team of gamers to fight other clans and claim bragging rights. The matches are hectic and fun without virtually an lag.
Summary:
Best game ever.