Calvinball is a fairly unique invention in Calvin and Hobbes, but it is somewhat simple to understand the game's otherwise complicated rules.
Calvin & Hobbes creator Bill Watterson refused the widespread merchandising of his characters; as he explained, it "violated ...
All of Watterson’s original Calvin and Hobbes artwork, aside from a few that he kept ... Watterson fought the Universal Press Syndicate for the rights to his characters. Kelp-Stebbins says he turned ...