An explosive Threequal, well worthy to pay full price!
The Singleplayer aspect is a standard 8 hour shooter, with interspersed driving sections and great set pieces throughout. Nothing spectacular but still better than most. The game's graphics are superb with neat animations and crisp textures that make the set piece battles all that much better to play in.
As you've come to expect the script and sound are both excellent and the gameplay is solid. My only quarm with Halo 3 is that it was maybe on the short side but the multiplayer makes up for this. With a well thought out multiplayer community system and lots to do online, this title is well worth the money you pay for it.
Graphics: 9/10
Gameplay: 8/10
Sound: 8/10
Value: 10/10