The format for the tournaments is as follows:
Brawl is 1v1.
UFC is 1v1.
Halo is 4v4.
SF4 is 1v1.
CS 1.6 is 5v5.
DotA is 5v5.
RB2 is 4v4 (possibly 3 also, although that is a disadvantage)
The rules for each game will be posted in the same section as this game.