Pro-G reviewed the new Playstation 3 title FlOw. Here's a snippet from their article:
"As you consume the various miniature creatures that drift through the flOw's gel, you evolve into an increasingly complex wire-frame creature. It is easiest to imagine yourself looking down from above on a skyscraper of a tank, as the liquid has numerous different layers stacked up in a tower like the floors of a building. Certain plankton cause you to raise up and down one level, and as you plunge deeper down your food source become larger, more numerous, and eventually just as hungry and dangerous as you."