Atari 2600: Raiders of the Lost Ark: Credits & Trivia Credits Howard Scott Warshaw .. developer Trivia Yar Cameo Go to the flying saucer mesa with the Chai and parachute (latter optional). Walk off the mesa and drop the Chai when you start falling. The "Yar" will appear at the top of the screen. Credits Activate the Yar Cameo, then earn a high score. If you scored well enough, the item "HSW2" will appear in your inventory when you finish the game. "HSW" = Howard Scott Warshaw, the game's author. "2" indicates that this is his second game.