There are many editions of Monopoly. Officially-licensed editions are produced by Hasbro itself or by USAopoly, and unofficial editions are published by Toy Vault. Official versions are named "____ Monopoly" (such as "Star Wars Monopoly") and feature the Monopoly logo, and unofficial versions are named "____-Opoly" (such as "Python-Opoly") and do not feature the Monopoly logo.