Gryzor

Gryzor is an action, platform, and shooter game released for the Amstrad CPC, Commodore 64, and Sinclair ZX Spectrum. You play as Lance Gryzor, a member of the Federation for Earth’s Defences, tasked with stopping the Durrs from the Planet Suna.

The alien invaders have established a stronghold on Earth and built an atmosphere processing plant to control the planet’s weather. Their plan is to trigger another ice age and seize Earth’s resources. To stop them, Gryzor must infiltrate the complex, overcome androids, weapons systems, deadly tunnels, and mazes, and destroy the plant.

The game features fast-paced combat and platforming challenges, including an electric force field, waves of enemy guerillas, an ice region, and a labyrinth of pipes and ducts before the final confrontation.