I recently wrote a write up on an interesting little game called Tag: The Power of Paint. I first heard about it watching the CO-OP episode on IGF(former 1up show guys).
It can’t be compared to the classic Portal though and I’m not sure exactly what it’s missing. Maybe the lack of a narrative element to make it interesting. Levels all look grey and progressing often feels like you are going through the same old thing over and over again despite the fact that each levels bring new challenges and interesting obstacles.
Read my entire write up here. The game is absolutely free for download. You can get it here