Basically it’s the British, and more hardcore version of power hour. It can be played with any number of people. Each player has a shot glass and must drink 1 shot of beer a minute for 100 minutes. It’s the sort of thing that sounds easy but few people can finish. People soon get bloated and drunk. Certain rules are debatable between those playing. Usually you can go to the toilet provided you take miss no more than 3 shots and you catch up when you return. No puking is allowed. Those who make it to 100 gain Centurian status.