Described on its App Store page as “Asteroids meets a lava lamp,” Osmos uses the intimacy of the touchscreen to create a singularly immersive experience. You start as a blue mote floating in a cosmos of vaguely biomorphic orbs.
Gameplay is simple: Big orbs absorb smaller ones and grow bigger in the process. Tap behind your avatar to scoot it around, increasing in size while avoiding death, until you’ve absorbed a target or become the biggest blob on the screen. There are 72 levels: In some you’re drifting in orbit ar...