Bought this yesterday, so far 12.3 hours played it says here. Don't really need to say more than that really! Some brilliant brain twisting puzzles with more variety than Portal. Movement is grid based but don't let that put you off. It may seem weird at first but it is necessary element in many of the puzzles so it is a design element rather than a limitation. Very entertaining indeed.

Bought this yesterday, so far 12.3 hours played it says here. Don't really need to say more than that really! Some brilliant brain twisting puzzles with more variety than Portal. Movement is grid based but don't let that put you off. It may seem weird at first but it is necessary element in many of the puzzles so it is a design element rather than a limitation. Very entertaining indeed.