The development of Axiom Verge began in 2010 as a side project for Happ, who balanced coding with a full-time job in the AAA industry.

Axiom Verge is more than just a "Metroidvania"; it is a massive five-year labor of love created entirely by a single developer, . Since its inception, the game has evolved from a hobbyist project into one of the most respected entries in the indie scene, defined by its surreal atmosphere and unique "glitch" mechanics. A Five-Year Solo Journey

: The game was finally released in 2015, receiving high praise for filling the void left by classic 8-bit and 16-bit titles like Metroid and Bionic Commando . Deepening the "Axiomverse"

: Happ handled everything—coding, art, animation, and music.