I can't tell if their use is supposed to be ironic or not - but it's irritating either way. Click on it and you'll read a cheesy motivational slogan straight off some kitten-festooned office poster: 'Dig a little deeper and you may find something new,' or 'If you never stop trying, you will get there eventually.' Usually these reflect on the puzzle you've just solved. After defeating a puzzle, you'll find a sketchy allegorical cartoon on the wall: a dog chasing its own tail, maybe, or a man pushing a stone up a mountain.

There's one incongruous human touch in all this lab-engineered intellectual torture. Visually, it couldn't be any more stark - it's etched in hard, angular monochrome and splashed with lurid neon - while the soundtrack of whining wind and distant animal calls is pure doomy alienation. It's a wilfully cruel first-person puzzle game that loves to trick the player with rule changes, visual sleights, false walls and impossible spaces as well as some testing logic problems. Alexander Bruce's Antichamber is a game that delights in its own inhumanity.

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