MegaZeux is a Game Creation System (GCS), inspired by Epic MegaGames' ZZT, first released by Gregory Janson in 1994. It was recently ported from 16bit MSDOS C/ASM to portable SDL C/C++, improving its platform support and hardware compatibility.

Many features have been added since the original DOS version, and with the help of an intuitive editor and a simple but powerful object-oriented programming language, MegaZeux allows you to create your own ANSI-esque games regardless of genre. It is actively maintained by a thriving community.

See http://digitalmzx.net/ for more information.