This wiki has been moved to https://github.com/SuperTux/wiki into the mediawiki branch.
For these cheats to work you have to be in debug mode. (To get into debug mode ctrl-click SuperTux.app, open contents, open MacOS; open a terminal window, drag SuperTup to the terminal window, type "--debug-mode" and hit enter.) Do not type these in, you just press the appropriate key, eg the Tab key.
* end - gain 50 coins * tab - become bigtux * delete - become firetux * l - take away a life * insert - become invincible (stars)-[on some keyboards this is the HELP key] * tab - become smalltux
To get in debug mode on other *nix's start the game with: supertux --debug-mode