A Dark Room starts about as minimal as a game can start: a single sentence of text and a fire that's about to go out. Keep it burning and a stranger wanders in from the cold. Feed and shelter them and your tiny camp slowly becomes a village, with builders, hunters, and gatherers turning raw text descriptions into a real, growing settlement. Nothing is explained upfront — the entire game is about discovering what each new building or resource unlocks next.
What starts as a slow-burning village management sim eventually opens up into something much stranger and larger in scope, as the story pulls you out beyond the village walls into systems the opening hour gives no hint of. It's deliberately paced specifically so that the shift in scale lands as a surprise, which is part of why spoiling it ahead of time tends to ruin the experience.
Few browser games manage to turn plain text into genuine tension and discovery the way this one does, and its slow reveal is still one of the best surprises in idle/incremental games. If you like the genre, GBK Games also has AdVenture Capitalist for a very different, faster-paced take on building something from nothing.