Deep Vein Idle

An idle MMO in the browser where everyone shares one small map. You send your character to a rock, a lake, a furnace or a monster and it works while you watch and while you sleep, next to other real players whose chat shows over their heads. Offline progress is exact rather than estimated. Fifteen skills with no level cap, a player market with real order books, a nightly world boss fought by everyone online at once, and a house you build room by room. Free, no signup, plays on a phone.