Well one of the games is a complete overhaul, the others have had their resolutions bumped up to 1080p and frame rate to 60fps as well as adding other features; Halo 2's original multiplayer (which can't be played on xbox anymore ) and the ability to string together your favorite missions are good examples of this. In addition, this is likely (give the number of preorders) to give Halo 3's multi player a good boost, which is good considering the other day I was playing and there were only 75 people online according to the severs. You then have a short Tv series, and access to a beta (in which your feedback may actually make a difference in the final game due to being set a year ahead of planned release) This is pretty great value for money if you look at how these things would cost separately: Halo2 A: $50 (based of CEA's price) CEA 3 + 4: about $55 (considering their current pricing plus work done) Nightfall: $20 (price of most DVD's here) [b]Grand Total: $125[/b] So you're essentially getting it all halfprice! (maybe slightly more or less I had to do conversions from GBP To USD )