Galactic Simulator

Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective.

As of now (2025), there is no reliable evidence to suggest that extraterrestrials have visited Earth.

— "Where are they?"

N = R* × Fp × Ne × Fl × Fi × Fc × L

    N：The number of detectable extraterrestrial civilizations in the galaxy

    R*：The rate of formation of stars in the galaxy

    Fp：The fraction of those stars with planetary systems

    Ne：The number of planets, per solar system, with an environment...