Gadaa Eco Builder is a game platform that teaches the UNESCO‑recognised Oromo Gadaa system through interactive play, while funding real‑world reforestation in Ethiopia. A Telegram‑based survival mode (already built) lets players face wolves (metaphors for climate disasters), plant trees, build roads, and progress through Gadaa stages – learning by doing. A creative mode (in development) will include Haadha Siinqee rituals, Odaa tree elections, and gudifachaa (adoption). Every in‑game action generates points that become real trees planted on degraded roadside land in Oromia. Land has been cleared by hand, community members are engaged, and trees are growing. The project was published by the UN Office for Disaster Risk Reduction (UNDRR) on PreventionWeb. A Gadaa elder conducts quarterly audits. The model is designed to scale across Ethiopia and beyond