fe2o3.io.
a study in patient decay. you are rust. spread across five tiers, from a backyard scrapyard to the planetary core.
fe2o3.io (the chemical formula of rust) is a five-tier .io-style sandbox where you play decay itself. start with a backyard pile of bolts; finish with a continent slowly browning under acid rain. five biomes (yard / city / country / continent / planet), per-tier weather, achievements, daily seeds, sandbox mode.
concept.
you are Fe₃O₃, the formula of decay. spread rust across five biomes. weather, perks, daily seeds, sandbox mode, soft endgame.
four pillars.
5 tiers
yard → city → country → continent → planet. each unlocks new mechanics + a new soundtrack track.
per-tier weather
wind redistributes dust, rain accelerates rust, sun slows everything down. the planet has its own atmosphere.
daily challenge
shareable seeded boards. compare against friends. midnight reset.
sandbox + perks
free-form sandbox between runs. eight inter-tier perks. tutorial replay any time.
in-game.
seven portals + voiddo.com.
fe2o3.io is shipped (or being shipped) to every major web-game portal — not exclusive to any of them. canonical play URL always lives on voiddo.com.
