Blush

I love this game: trippy, filled with beautiful colors and lights and non linear. It reminds me of flOw but based on more complex graphics and ambiance. In Blush you play the role of a jellyfish-y creature, you explore the vast waters to collect eggs and fight off your enemies. The real trip in this game is no doubt the atmosphere, the glows against the cold colors and overall concept and control of the game. The downside is that the first time you play it you have to a) download the necessary plugin/plugin update and b) create an account (you can play as a guest, but a popup will annoy you every game over) still --it doesn't take to long to do these things, Blush is definitely worth it!

Play it here: http://blurst.com/blush/