repl.it is an online environment for interactively exploring programming languages. Supported languages.
posted by juv3nal on Sep 20, 2011 - 21 comments

Thanks to the LUA scripting support in NES emulator FCEUX, you can do things like drag and drop enemies and powerups, alter gravity, give mario a jetpack, or make him shoot magic missiles. Super Mario Brothers not your thing? Perhaps you'd rather just have it play Pinball for you.
posted by Pope Guilty on Mar 20, 2009 - 14 comments