Rain World

Rain World is a survival platformer set in the ruins of an industrial civilisation, on a world where the rain has become so violent that life only emerges briefly between catastrophic downpours. You play a small slugcat, separated from your family in a flood, and your only goals are to find food, find shelter before the next rain hits, and eventually find the rest of your kind. The world is the most uncompromising part of the game — it does not adjust to your skill level, and its inhabitants have their own agendas regardless of where you are.

The ecosystem is the game's biggest distinguishing feature. Every creature in the world is a fully realised AI with its own behaviour patterns, hunger drives and relationships with other species. You're not the protagonist as far as anything else in the world is concerned — you're a small, soft prey item with stealth and improvisation as your only real defences. Predators hunt each other as readily as they hunt you, and the cleverest survival strategies often involve playing one threat against another rather than confronting either directly.

Movement is unusually expressive for the genre. The slugcat's animation system is built around momentum and ragdoll physics rather than fixed states, which means experienced players can develop a fluid, almost balletic traversal across pipes, ledges and gaps — and inexperienced players can flail and fall badly into the jaws of something patient. The 16-bit-inspired aesthetic is doing more than nostalgia work: the painted backgrounds and detailed character animation are central to how the world communicates threat and opportunity to a player who has no inventory, no map, and no tutorial.