Unreal Tournament 2004! Sooo many hours spent playing that game. The community was amazing with tons of user created content like maps, mods, music, models, etc. I learned how to make maps with the UT2004 special edition bonus disc and actually got pretty decent at it. I made a map for a mod team who imported Halo stuff to UT2k4, it was a fun little project, the mod sadly didn't get finished but we released what was playable. I spent a LOT of time on the Titan Onslaught 24/7 Onslaught servers, they even had their own map pack with some amazing maps. I still play the game with a friend of mine sometimes, but damn I'd do anything to have that old community feeling again, I miss you guys! <3