Following the closure of the Atari Program Exchange, a lightly updated version of Galahad and the Holy Grail was published by Antic Software.
The player explores the world, which is divided into single-screen areas representing indoor and outdoor locations, finding objects and overcoming obstacles.
"[4] After the Atari Program Exchange shut down, Antic Software re-released Galahad and the Holy Grail in 1985 with the formerly printed manual on the second side of the disk.
"[5] According to an AtariAge forum member who disassembled the room structure of the game, the Antic Software version fixed a number of traversal glitches and other bugs.
[9] Galahad and the Holy Grail caused game designer Chris Crawford to hire Crockford at the research division of Atari, Inc. where he worked on hardware and programming environments.