Basic Fantasy

Basic Fantasy Role-Playing Game, is an open source retro-clone role-playing game written by Chris Gonnerman that emulates, and is largely compatible with, the 1981 Basic and Expert sets of Dungeons & Dragons. Its main differences from B/X D&D include d20-style ascending armor class and separation of character race and class. It was first published in print in 2007 and updated in 2008, 2014, and 2023. The game is one of the first products of the Old School Revival and has been positively received.