I just d/l and play the Halo demo, and I think it's not as great as the Xbox version. I'm not sure why, but I think this game doesn't have the same "magic" as the Xbox version. Overall, it's pretty good but two things that bugs me: the graphics and multiplayer. On my Sony, I had to turn everything down/off in order to keep 15-20 fps (slow but playable). Unfortunately it will slow down to a crawl if they're are other players/monsters/explosions on the screen. My last gripe is the servers are SLOW. I was able to get in some good games, but for the most part it is too laggy. Don't go for the hype and download the demo first if you're interested. My 2 cents