We are currently a Halo: Reach clan but we are planning to expand to other games. We like playing Custom Games and Matchmaking together so all you have to do if you want to play a game is join our party.
We also have a group within the clan called the Oracle Foundation and we forge maps. Tactical Assassins help with this by testing the maps making community made maps much better. If you wish to join us contact me on these forums or on XBL.