Fission Superstar X is a space rogue-lite game developed by Turbo Pelvis 3000 for Xbox One. In this game, you play as a crew member of Dr. Leopold's spaceship, carrying a payload of a "superstar" nuclear bomb named Celine. Your mission is to tour the solar system and make Celine famous, while fending off endless waves of attackers trying to destroy her.

The game features a randomly generated environment with over 20 different scientifically inaccurate environments, such as space whale pods and planetary atmospheres. You can fight using ranged and melee weapons while blocking attacks with your shield. The game also offers the option to manage your bomber and make difficult choices, such as repairing your ship, upgrading your stats, or healing crew members. With over 100 different possible crew members, 64 different weapons, and 70 enemy types with variations, the game offers a wide range of customization options. You can unlock 9 playable ships and fight giant bosses on 8 different worlds from Pluto to Earth.

Overall, Fission Superstar X is an absurd and entertaining game that offers a unique twist to the space rogue-lite genre. The game's quirky humor and wacky storyline make it a fun and enjoyable experience for gamers looking for something different.