Crazy Bones was inspired by a game played in Ancient Greece called 'Astragals', where children played a similar game using sheep's knucklebones. This ancient pastime is also known as Tabas.

Crazy Bones is a modern version of this game, played with characters moulded from plastic. There are hundreds of individual characters, each character having a unique face and name. Each series has a number of 'rare' pieces that are sought after by collectors and are sold on numerous websites for many times their original value.