Gauntlet is functional on the Apple II, but that's about it. Game play is painfully slow, graphics are serviceable but sorely lacking in color, and the attempts at music really are a joke. Two players can play at the same time, but one of them will be forced to use the keyboard, which for this game is awkward at best.
Adventure fans, play Gauntlet on some other system, and save the Apple II for text games like Zork.