an idle game about oxidation. you click an iron yard, it rusts in five tiers, you buy patina bots that rust it for you while you sleep. it's a game about decay, calmly accepted.
// oxidation ladder · five tiers · zero rollback
an idle game shouldn't be a number-go-up clicker. this one tracks materials, weather, and a slowly rotting yard you actually care about.
tap any iron object to advance its oxidation tick. five tiers from pristine to scoria. the more you click, the more rust dust you bank for upgrades.
spend rust dust on autonomous patina bots. each one walks the yard rusting things at a different cadence. five-bot end-game runs hot.
click power, weather modifiers, bot speed, yard size, OST tracks. every upgrade is bought with in-game dust. zero microtransactions.
every iron object in the yard is a hand-tinted sprite. cars, fences, bolts, rebar, water tanks, tin roofs. each rusts on its own schedule.
a slow industrial-ambient OST runs in the background. no vocals, no drops, no urgency. it pairs with rusting the way ambient should.
the yard remembers. close the tab, come back tomorrow, the patina bots kept rusting. no email, no account, no telemetry.
every cell below is one hand-tinted iron object in the yard. tier-1 is cold steel; tier-5 is scoria — terminal rust. when the bots are running, every cell drifts down the ladder.
60 / 60 catalogued · 5 oxidation tiers · zero rollback
iron is just unfinished rust.
— fe2o3 design log, march 2026fe2o3 is in active development. the browser build is being rewritten; no public playtest is up right now. drop an email and we will write back when the first stable build is open for play.