Sometimes unecessary nudity can be funny, but it can also backfire when placed into a serious storyline.
I've noticed that people define "gratuitous" differently when it comes to nudity in video games.
In the 1990s NEC (on the PC Engine series and PC-FX) and Sega (on Saturn) were the only companies who officially allowed sexual content on their consoles in Japan, but eroge was more prevalent on the NEC PC-98 and FM Towns computer platforms.
One of the earliest video games (if not the first) to feature sexual themes was the 1981 text-based Softporn Adventure, published by On-Line Systems for the Apple II.
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