Osmos has been around for a little while but I only just managed to give it a good play (Yes, it is a slow day in the library).
The game is a nice standard eat ‘em up taking place in an ambiant space-style pond.
The game features a solid ambient soundtrack to match and with one particularly interesting dynamic feature: The player has the ability to slow the level of play down which makes every action take longer to complete and the competition life-forms move slower. With this the soundtrack is time-shifted to match the new speed of game. This musical immersion in a game mechanic designed to make the game easier (or harder) really makes the slower movement of play stand out.