Experience Retro Fun in Klaus Lee - Thunderballs, Out June 26

Gaming Staff • June 19, 2025

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The long-awaited game, Klaus Lee – Thunderballs, is set to release on various platforms including Steam, GOG, Nintendo Switch, PlayStation 4, and Xbox One on June 26th, 2025, for €12.99. The game, developed by NUKKLEAR and published by Assemble Entertainment, promises to be outrageously retro, over the top, and fun.

Klaus Lee – Thunderballs features an outrageously simple blaster, a built-in level editor that is easy to use, and 100 challenging levels. The game is designed to be stupid, silly, and fun, providing a much-needed break from the seriousness of everyday life.

Assemble Entertainment, based in Wiesbaden, Germany, is an independent game publisher known for its critically acclaimed indie hits such as Sticky Business, Roadwarden, Lacuna, and Asgard's Fall. The company also owns in-house developer Gentlymad Studios, creators of the Endzone franchise. Assemble has won the German Developer Award for “Best Publisher” twice and organizes GermanDevDays, one of Germany’s largest developer conferences.

NUKKLEAR, based in Hanover, Germany, is a game development studio with a team that transcends geographical borders. The studio has a reputation for delivering innovation and expertise, with a portfolio that includes Dune: Awakening, Destroy All Humans, Everspace, Project Cars Go, and Comanche.

With Klaus Lee – Thunderballs, NUKKLEAR and Assemble Entertainment have created a game that is sure to provide hours of entertainment. The game's outrageous features and simple gameplay make it accessible to players of all ages and skill levels, while the challenging levels provide a satisfying level of difficulty. Fans of retro games and over-the-top action are sure to enjoy Klaus Lee – Thunderballs.

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