WARPEnemy Zero for the Sega Saturn is probably the most obscure title on this list, as it was created solely for the ill-fated Sega Saturn. The game was about an alien infestation on an abandoned spaceship, packaged in a first-person adventure. Beyond some horror elements, the game didn't feature much in the way of adult material. However, if players were able to complete the game on normal, then they were 'rewarded' with a suprise nude shower scene at the start of a new game.