I played a somewhat lesser known platformer called GRIS recently. Dialogue-free yet highly focused on its story, allegorical, and damn beautiful. I'm a sucker for artsy and atmospheric low-pressure platformers à la Knytt - in this one you can't die, though the downside is that if you miss a jump, you will have to climb back up again. It's thematically appropriate, given the story the game is telling.