Celeste Classic – PICO-8 Hit Ported to Original Game Boy Homebrew | Custom Game Boy Cartridge

Celeste Classic ported to original Game Boy hardware by joshop — released July 2026. Built entirely in SM83 assembly from scratch in just 29.9KB of ROM, with all levels and music of the PICO-8 original intact and a fully rewritten physics engine. Confirmed working on real DMG Game Boy, GBC and GBA. One of the most impressive Game Boy homebrews ever made. Custom cartridge, plug and play. Compatible: GB, GBC, GBA, GBA SP.