While Osmos is generally a paid game ($10 for the full PC/Mac/Linux version), there are official ways to access it for free depending on your platform:
: The game features diverse environments, including "Solar" levels where you must orbit massive "attractors" and "Antimatter" levels where collisions have different consequences. Osmos Free Download
: It includes 47 levels across 8 distinct types, such as Ambient, Sentient, and Warped Chaos. Downloading Osmos for Free While Osmos is generally a paid game ($10