GamePro- "Since Halo: Combat Evolved Anniversary uses the Reach Engine, you can engage in multiplayer with Xbox 360 friends on Halo: Reach. That's a huge bonus, and something that really gives you value for the $40 price tag that you're paying. Moreover, it means that veteran Halo players will be able to take on newer Halo: Reach players in the same arenas, which should make for interesting YouTube videos and tournament competitions.
At the end of it all, we're impressed with the extra attention to detail that we're seeing from 343 Industries, Saber Interactive, and Certain Affinity. Where this anniversary edition of Halo: CE could've stopped at a fresh coat of paint, these developers have taken the initiative to improve upon Bungie's original design. Regardless of how the final product stacks up against everything else releasing this year, it's a good example of when to do an anniversary edition, and how to do it right."