The Internet Archive has thousands of old DOS-based videogames backed up, complete with a browser emulator so you can play them online. Gizmodo dug through everything and found some of the old porn video games are there, too. Gizmodo left out the most important one: several versions of Leisure Suit Larry are there! Plus, there's a bunch I've never heard of -- I'm sure "Spear of Destiny", "Guldkorn Expressen", and "Tommy's Gorilla Balls" must be pornographic somehow, just based on the names.