This game was absolutely fantastic. It has an original concept, and good application. It was challenging, fun, infuriating at times, and immensely satisifying to complete. The storyline is relatively simple - as are the controls. You will almost always be able to understand how a level should be beat, but the application will still be somewhat challenging, and may require a few attempts. Once you've beaten the game, there is a secondary playthrough which removes one of your abilities, rendering the game a completely different approach - needing more planning and less random leaping about. It assumes you know how the mechanics work at that point, then puts your knowledge to the test. The game was a bit short, but well paced. I would happily buy the game again, and at it's current price, it is more than worthwhile, even just to test it out.