What is Grifball? Well, if you play Halo 3 and use Xbox Live it’s is a custom game type, kinda like a hybrid of hockey & football – sort of… anyways the guys from Red vs. Blue present this nice and informative video tutorial on how to play.

Here are the rules found at the Grifball Official website:

Grifball is an extremely fast paced sport game type that’s played on an open court between two teams of four players. Each team has a goal and each player carries a gravity hammer and an energy sword. In the center of the arena is a single ball that can be picked up by anyone on the field. Each match consists of 5 rounds, with each round ending when someone slams the ball into their opponent’s goal. The team with the most goals wins.

It’s a very simple game by design, but it’s an enormous amount of non-stop action. At any point in time, you are either on defense with your 3 teammates guarding your goal or you are on offense as the ball carrier with three blockers. In a second, the game can turn and you have to be ready to seamlessly change roles.