So, Cho Aniki. It’s basically a shooting game, but replace spaceships with half naked guys. I’ll just take Wikipedia’s description:
For various reasons, the popularity of the Cho Aniki games has endured since the series’ debut. Depending on which specific title one looks at, highlights include in-game music, innovative control schemes or sheer kitsch value. In Japan, these games are examples of baka-ge, a type of kuso-ge. “Baka-ge” literally means “idiot game” while “kuso-ge” literally means “shitty game” or “shit game”. Baka-ge’s appeal lies in its campness. Indisputably, the game’s aesthetic sense — semi-nude men in suggestive homoerotic poses — is a unique one, certainly a quality that has given the series a cult popularity among Western gamers. Though the graphics are more risqué than pornographic, the series references homosexuality and gay sex more directly and more often than perhaps any other video game series in history.