One version is common, at least one other version is rare
Game design and in-game text by Jon Freeman; program design by Anne Westfall. Coding by Anne Westfall. Graphics direction by Jon Freeman; gfx assistance by George Barr, Greg Johnson & Michael Kosaka. Music by Teri Mason (adapted from Wagner's epic operas Der Ring des Nibelungen); music and sound FX coding by Dave Warhol & Eddie Dombrower.