This game is a strong puzzle-platformer, wrapped in one of the most convincingly realised aesthetics of any game I have ever witnessed. Breathtaking monochromatic audio-visuals aside, this game is also a very bold gameplay statement, revolving around environmental puzzles so tightly structured that every object in the game world has a purpose as part of the perpetual journey from left to right.

Limbo de-constructs the storytelling of the genre in a quietly organic fashion. When your avatar, a small and silent boy, wakes up in the world, your first instinct is to run to the right of the screen, to progress and overcome any obstacle in your path. Initially it's the joy of discovery that drives you, even in a world so impressively murky as this. There is no clear purpose laid out in the beginning, but as you begin to encounter others in the world, the player finds motivation for the journey. The story is not really told, it is suggested, and inferred. And utterly compelling.

Spacechem is fun, and taxing. Ideal for people who like cold hard computer logic.

Basically you program circuits to recombine various atoms and compounds into various other atoms and compounds. Early on, it's really simple stuff, and the tutorial levels are pretty good at cluing you into what's going on, but after a while you're on your own, and you really have to put your thinking caps on.

SpaceChem is really challenging, but rewarding.

In this platforming game, you cannot jump. Yes that's right, you cannot jump. You can however flip from floor to ceiling and vice versa. As a result this is a platforming game that will break your brain. And sometimes your keyboard in frustration - but when you finally navigate a particular deathtrap, it's really rewarding. Incredible design and presentation, phenomonal atmosphere, and genuinely challenging despite regular checkpointing.