ZZT was created by Tim Sweeney of Epic Games. ZZT allows the creation of your own game worlds with the inclusion of a powerful world editor. The game is powered by boards that include pre-placed objects scripted using a custom language called ZZT-OOP. All graphics in game are done with standard and extended ANSI characters. ZZT comes with some sample worlds demonstrating the unique types of puzzles the game power. A majority of basic ZZT worlds feature elements similar to puzzle games, and Roguelikes. Many other types of game worlds can be created due to the flexibility the editor provides. A large cult-community of followers still supports the game. These supporters have created many additional tricks and tools to help push the limitations of the built-in editor. In addition, hundreds of user-created worlds are available for download.