I appreciate this game for what it is. It seems a but buggy and poorly optimized though. I have a pretty good PC rig and despite turning on AA etc. I still get horrible screen tears throughout this game, especially while awake.
OK, as for the game itself - it is very unique, has interesting puzzles and despite being poorly optimized some of the areas can be breathtaking!
I got the game on sale for around 3 bucks but if you like exploring, solving small puzzles and interesting environments - you may like dream. I can highly recommend it, on a good sale (less then 10 bucks) but I can not (despite the love someone is obviously putting into this game) recommend it at full price, at this point in time but they update constantly and may very well be worth the full price once finished.
I was really impressed (and confused) by the Escher-esque level.