Plot: Osomatsu-kun: Hachamecha Gekijō is a platform video game by Sega, which was released in 1988 for the Sega Mega Drive. One of four launch titles for the Mega Drive, it is the only one to not see a release outside of Japan. Wikipedia
Plot: Dyna Brothers is a strategy video developed by CRI. Originally released for the Sega Mega Drive in 1992 in Japan and later was re-released for the Wii Virtual Console
Plot: Trampoline Terror! is a Sega Genesis video game that was released in 1990. It combines elements of strategy video games and overhead view action video games. A Japanese release under the name Explode Star was planned, but was cancelled. Wikipedia
Plot: Chi Chi's Pro Challenge Golf is a 1993 golf video game that was released exclusively for the Sega Mega Drive featuring Chi-Chi Rodríguez. Wikipedia
Plot: Blue Almanac is a futuristic role-playing video game for the Sega Mega Drive. It was released only for Japan on June 22, 1991 and had a US release as Star Odyssey planned and advertised but it was cancelled at the time. Wikipedia