Cell to Singularity - Evolution Never Ends

Cell to Singularity is a clicker that walks you through the history of life on Earth. You start in the primordial soup, with nothing alive in the Solar System, and every click earns Entropy, the currency that pays for the next step in evolution. Spending Entropy moves life forward from single cells to fish, reptiles, mammals, monkeys and humans. Once people show up, a second currency called Ideas opens a tech tree of science and technology upgrades that carries you past the discovery of fire and the Industrial Revolution into the present day and beyond. The later chapters turn into speculative science fiction about the technological singularity, surviving on Mars and terraforming it. Along the way you see your animals in 3D habitats, pick up real facts about evolution and natural history, and listen to a classical music soundtrack. It's free to play on Steam from Computer Lunch, and it has been running and adding content for years. The educational side makes it a good pick for curious players, students or anyone who wants an idle game that teaches a little while the numbers go up.