Osmos

Osmos invites you into an ambient world of elegant, physics-based play, dreamlike visuals, and a minimalist electronic soundtrack. Your goal is to grow by absorbing other motes, and you move by ejecting matter behind you, though every ejection also shrinks you, so patience pays off.

The game progresses from serene early levels into more varied and demanding worlds, 47 in all plus bonus content, where you face attractors, repulsors, and intelligent motes that share your abilities and goals. Procedural content lets you play random versions of any level, dynamic time-warping lets you slow time to outmaneuver agile rivals or speed it up for a sterner test, and the soundtrack draws on artists such as Loscil and Biosphere. Osmos was an Independent Games Festival finalist in three categories.