Crab is a tag game for groups of any size. The more people participate, the more fun the game usually is. While you don't need any equipment to play the game, it can only be played on some clean floor where you can slide around.
None, but you need a clean and empty floor.
One player (or possibly a few players) is the crab. The crab is sitting on the floor, using its feet to represent the claws. It tries to catch the other players by catching (at least one of) their feet using its "claws". A player thus caught becomes a crab himself. The last player to remain uncaught wins the game.
- Spiderman is quite similar.