Jet Set Willy, released in 1984 by Software Projects for the ZX Spectrum, is one of the most recognisable British computer games of the 8-bit era. Designed by Matthew Smith as the follow-up to Manic Miner, it expanded on the earlier game’s mechanics to create a sprawling, open-ended platform adventure set inside Willy’s mansion.

The game placed players in control of Willy, navigating dozens of interconnected rooms filled with hazards, moving platforms, and surreal enemies. Unlike many platform games of the time, Jet Set Willy allowed players to explore rooms in multiple orders, giving it a non-linear structure that felt unusually ambitious on the Spectrum. The objective was simple but demanding: clean up every object in the mansion before retiring to bed.

Willy himself became an instantly recognisable character. His simple walking animation, cycling through distinct stages of movement, is one of the defining visual elements of the game. That repeated stride, accompanied by looping in-game music, is closely tied to how many players remember the experience, especially given the game’s famously uneven difficulty and unpredictable physics.

Despite its rough edges, Jet Set Willy became a cultural touchstone. It captured the playful, anarchic spirit of early UK bedroom coding and left a lasting mark on platform game design. Decades later, it remains one of the most discussed and fondly remembered titles in the ZX Spectrum library.