oh man we did this when I was abroad in Australia. Best time ever! we started with killing a 12 pack between the team, then went to dizzy bat after that. all you need for this is one of those plastic bats. Cut the small end by the handle off, fill it with beer, pound the beer, then someone throws a can at you and you try to hit it. you cannot advance until you hit a can. Then we did flip cup team vs team, then it was an obstical course with lots of beer to keep you cooled off.
have fun man, and be safe!