You pick up an orb, and the orb is a world. Enter it, come out of it, put one inside another, and the puzzle you were stuck on turns out to have been a matter of nesting.

One idea, taken all the way

World-leaping is the whole mechanic, and the game keeps finding new consequences of it for hours. Jeppe Carlsen designed the puzzles in LIMBO and INSIDE, and this is his best work.

No words at all

Nothing is explained and nothing needs to be. Every new device teaches itself, and there is never a tutorial or a hint prompt.

Alien machinery, alien biomes

Industrial structures and enormous organic caverns left by an ancient civilisation, connected in ways that only make sense once you can see between them.