We've seen many variations of hockey, like 'Bubble Hockey' for example.
We've also seen other sports stem from hockey, like soccer on ice.
Both are clearly a ton of fun, and they're also very difficult due to the fact that the players aren't wearing skates.
'Soap Hockey' is another sport that is difficult for the exact same reason, but don't just take our word for it.
This is probably the perfect summer sport because it's played outside, it's probably as refreshing as it is painful falling on soap and water and it doesn't seem very difficult to set up.
It does seem difficult to play, however, and that makes the made up game all the more fun.
(H/T: /r/hockey)
