The concept behind Osmos is quite simple: bigger motes can swallow smaller motes. Most motes just float around, but the player and other intelligent motes can propel themselves by “farting” (my term) out smaller motes, becoming smaller in the process. Farting can also be used to push things away.
The execution of Osmos is extremely well-done. In the hands of another casual developer the motes might have had bug-eyes and squeaky sound effects, but the creators wisely went with a minimal and organic design which is very effective. Despite the simple graphics, there’s a lot of detail to the motes, which react to their environment by pulsing, glowing, and animating in various ways. The coolest effect, in my opinion, is how the motes change color depending on how much bigger or smaller than you they are. It’s really satisfying when you swallow a large mote and watching the whole screen turn from a malevolent red to a peaceful blue. You are now the king!
Osmos is a competitive Petri dish. The mechanics create a lot of interesting dilemmas and the graphics and music make the deceptively serene world come to life. The different game modes pit you against a variety of challenges that are well-suited to the mechanics – some of the levels get quite tough. I really enjoy this game. The chill atmosphere and abstract graphics shouldn’t fool you into thinking that it’s necessarily slow-paced or boring.
The game’s been out for awhile, and right now it’s on sale at Steam for a dirt-cheap $2. You can also support Hemisphere Games by buying it direct from them for the full $10.
TIGdb: Entry for Osmos