The Indie Game Website writes: “Doctor Leopold from Planet X made a bomb. Apparently its called Celine, and it wants to go on a tour of the solar system. Its your job to make that happen. The residents of the solar system arent too happy about this and will do what they can to shoot you to bits, but Im sure you can handle that.
Fission Superstar X is a blend of side-scrolling space shooter with roguelike elements. Youll escort the anthropomorphized bomb from planet to planet, gathering funds, upgrading your ship and defeating tougher and tougher enemies. The target is to destroy the Earth, but youll land at every planet (including poor Pluto) along the way. If you like, you can detonate the bomb there, ending the run and unlocking a new ship for your troubles.”
Source: N4G PC Fission Superstar X Review | The Indie Game Website