A sequel to the Nintendo 64 episode, Star Successor is a mix of a classic railshooter and a shoot'em up.

The two protagonists are Isa, a human boy, and Kachi, a non-human girl. The story begins with the crash of their spaceship on Earth, and from then they will attempt to find another way to leave the planet. But it seems they are being watched and followed...

The player takes control of either Isa or Kachi, each one having its own play-style. While Isa's special ability is a power blast, Kachi is able to lock multiple targets and fire at them. The characters also have the ability to use some quick movements of melee fighting. The game can be played with several kinds of control system: from the Gamecube Controller or the Classic Controller to the combo of Wiimote and Nunchuk. The Wii Zapper is also supported.