It's unusual for someone to come up with a new concept in gaming - yet that's exactly what this developer did. It is a puzzle game that looks like a first person shooter. Amazing three dimensional worlds - but with no time pressure involved. Instead you have to think about how you can use the tools the game gives you to disable gates, floating bombs, turret guns, etc - to get to the game piece (or bonus star) at the end of each puzzle. You'll later arrange these game pieces in a tangram style puzzle to unlock more of the world to explore. The initial levels are of reasonable challenge, but it quickly ramps up. Including the optional collectible stars, there are well over 100 levels in this game. And the downloadable add-on pack adds even more. I can't recommend this game more highly.

Note: I strongly suggest you download the demo to make sure it will run on your Mac as the graphic requirements are quite steep. Don't let the difficultly of the demo throw you off - it is clearly from an early build of the game and starts at a level that would be well into the real game. With the full version, you'll have plenty of time to get the hang of it, once you've made sure you computer can handle it. Enjoy. (I'm losing sleep staying up too late playing it - it's that good.)