GameBoyWorlds
Research · ICLR 2027 under review2026A testbed for self-improvement in embodied game environments. Ten Game Boy titles across five series, modelled as POMDPs with a discrete eight-button action space, 50 hand-curated tasks and completion functions each, for 500 tasks total. Agents train with no rewards, no demonstrations and no documentation, then are dropped into a moment of gameplay and given a task in natural language.
- 500 tasks · 10 titles · 5 series
- Best frontier model averages 45%
- Deja Vu games near-unsolved at 2–22%
- Open Gemma-4-31B (35%) beats GPT-5-mini (26%)


