[quote name='rybrad']Anyone have thoughts on this game? I remember having passing interest in the mechanics but never followed the game much.[/QUOTE]
Quick opinion:
It's an interesting game with unique puzzles, but it has pretty much zero replayability.
Longer opinion:
It took me a shade under 20 hours to get 100% in the game, and I was being really thorough in my searches for memories. You could definitely finish the game MUCH faster if you didn't bother getting all of them, though. I can see why people may complain that the environments and enemies/hazards are monotonous - there are a limited number of different enemies/hazards in the game, and the color palette tends to be fairly uniform and washed out in each area. That didn't bother me very much, though, as I found the puzzles to be interesting and entertaining, especially in the way they used light and interaction with the real world. The lonely, desolate feel of the tower was a nice touch, too; people that liked Ico and Shadow of the Colossus would find that very familiar.
The game itself is fairly straightforward, though, and once you finish it, it gives you very little incentive to play it again. (You unlock a couple of different weapons that you can use in subsequent playthroughs, but they don't do anything special. Besides, puzzle-solving is the main focus of the game, not fighting, and the extra weapons don't help you solve things faster.) I enjoyed it for the $15 I paid for it, but I was also able to trade it in for $12 - for $3, this game was definitely worth it.