 Gamma World 2nd edition Basic Rules Booklet cover | |
| Designers | James M. Ward and Gary Jaquet |
|---|---|
| Publishers | TSR (1st edition–4th edition) Wizards of the Coast (5th edition, 7th edition) Sword and Sorcery Studios (6th edition) |
| Publication | 1978 (1st edition) 1983 (2nd edition) 1986 (3rd edition) 1992 (4th edition) 2000 (5th edition) 2003 (6th edition) 2010 (7th edition) |
| Genres | Post-apocalypse, Science fantasy |
| Systems | Custom (1st–4th edition) Alternity (5th edition) d20 System (6th–7th edition) |
Gamma World is a post-apocalyptic science fantasy role-playing game in which player characters explore Earth centuries after the collapse of civilization, searching for artifacts from the time before "The Great Upheaval". The game was originally designed by James M. Ward and Gary Jaquet, and first published by TSR in 1978. It borrows heavily from Ward's earlier role-playing game, Metamorphosis Alpha.