Vader's Revenge was an obscure pornographic video game for the Atari 2600 released in November of 1982. It featured Darth Vader on a desert planet raping a woman while blaster bolts rained from the sky.
The game has been described as one of the worst ever made, possibly the reason behind the video game crash of 1983. It is notable for only one reason, that being the first canon appearance of a penis in the Star Wars universe. Fan speculation on the identity of the woman has run rampant since 1982. Possibilities include Padmé Amidala, Princess Leia, Mon Mothma, Shmi Skywalker (in the Freudian interpretation made famous in Wired magazine), and Queen Labia Majora.
The game is said to have inspired Vader's, Yoda's and Darth Secret's appearance in the simultaneously faggoty and fetishistic Japanese animu fighting game, Soulcalibur IV: Super Ultra Battle Duel Fight Legend of Soul Calibur Ultra Final Battle Duel Fight!!