Making a real Game Boy Advance game with GPT-6 Astra
HugoDuprez · x · 2026-09-08
Developer Hugo Duprez built a Game Boy Advance ROM that actually runs on real hardware using GPT-6 Astra: a medieval pixel-art turn-based archery duel inspired by the classic Flash game Bowman.
His initial prompt defined the core game loop, art direction, and controls (D-pad for angle/power, A to shoot, gravity and wind affecting arrow arcs, headshot damage, best-of-three matches, believable AI aiming mistakes with difficulty settings), and the model generated assets via Sprite Fusion's API. Prompts, assets, and the ROM are published in his blog post.
Related event: Developer Builds a Playable GBA Game with GPT-6 Astra(2 posts)→
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