While Mortal Kombat was a big part of the hearings on video game violence and sexual content (which would eventually lead to the establishment of the ESRB), FMV games like Night Trap had a lot to do with it, too. Night Trap's not as well known, but came out for the Sega CD the same year Mortal Kombat was released. Its "sexually suggestive" content often put it in the same breath as Mortal Kombat's over-the-top gore.
RE: Curiosities of video games # 1