Ristar

The game takes place in the seven-planet Valdi System (also known as the “Vadji” System according to the back of the European box). An evil space pirate, Kaiser Greedy, has made the planets’ leaders obey him. The inhabitants of Planet Neer (Flora outside Japan) pray for a hero before Greedy’s mind control snatches them. The desperate prayers reach the nebula of the Star Goddess, Oruto. She awakens one of her children, Ristar, with the sole purpose of granting the wishes of the innocent people. He must stop Greedy and the brainwashed leaders of each world in the galaxy, to restore peace to the galaxy.

In Mega Drive versions outside Japan, Oruto is not seen. Instead, Ristar has a father figure, the Legendary Hero, who is a shooting star that protects the Valdi System. Rather than Oruto awakening Ristar, the Legendary Hero was kidnapped by Greedy, and it is up to Ristar to rescue his father as well. However, Oruto is still seen in the Game Gear version.