Just when the whole thing seems in danger of becoming a cold study in design brilliance, however, the on-screen clock comes into its own, raising the game's temperature by turning each challenge into a speed-runner's dream. Almost every activity, from falling off platforms to climbing ladders, can have a few extraneous frames of animation cut away by switching dimensions at just the right moment, slicing a few micro-seconds from your completion time and turning an otherwise cerebral challenge into a twitchy reaction test.
It's fitting, then, that an idea that revolves around shadowy dimensions should have a second game all but hidden within it, and it's a delight to discover a title that can concertina so many ideas into such a tight space.
8/10
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