Originally posted by Vash
In my opinion, it is. It's the funnest FPS I've played since Half-Life. There are technical issues, but those'll get worked out. The Halo community is a pretty cool one to boot, and they're gonna be all over those editing tools like mud on a pig. I'm expecting some very cool MP maps for this game, as well as some sweet mods.
The simple possibility for a Marathon mod makes my decision for me.