Retroid: Cartridge Protocol

Retroid: Cartridge Protocol combines fast-paced combat, unpredictable enemies, and the thrill of progression into a high-quality sci-fi roguelike experience. Every run offers new battles and strategic choices, keeping the challenge fresh and immersive.

Once overshadowed, Dr. Victor stole Dr. Evelyn’s groundbreaking technology out of envy, creating the Overmind army to seize control of the planet. As Prototype Zero-One, you are the only one who can unlock the hidden power within the cartridges and reclaim the world.

• Unpredictable battles – Enemy evolutions create new combat patterns every run.

• Simple yet deep controls – Outsmart foes and map traps with melee strikes and precise dashes.

• Progress through exploration – Permanent and temporary upgrades fuel long-term growth.

• Detailed sci-fi design – Immerse yourself in a richly crafted futuristic world.

Find every cartridge. Unlock your final evolution.


Take back the planet from the Overmind army.