There are a few issues though. RAM, for one. If you don't have 100 Megs of RAM to give this game, beware. You can use Virtual Memory, but you really want physical RAM to run this puppy under or it gets dog slow. The user interface for the game is also on the crap side.
Menus respond slowly and the overall design is less than intuitive.
The bottom line with this game is that Epic has created a masterpiece against which I will be measuring all other first person shooters. If you enjoy the genre, this is the must have title for your Mac. Excellent - The bot AI is excellent, there are a ton of maps to play on, including maps from Unreal, and lots of different game styles to master. Excellent - It doesn't get better than this. Try a chainsaw only game of team deathmatch.