The anthropic principle — made playable
Break theUniverse
Nudge the fundamental constants of physics and watch your cosmos come alive — or collapse. Reality balances in a window thinner than a razor. Step outside it, and nothing survives to notice.
The Universe Tuner
Six dials hold reality together. Nudge gravity, dark energy, the nuclear force — and watch stars fail to ignite, galaxies collapse, or, just sometimes, a universe wake up and wonder why. Then share the one you made.
Open the TunerMore to explore
The Tuner is the main event — but it isn't the only room to get lost in.
You Shouldn't Exist
The odds against you — this planet, this species, this exact you — stacked into one dizzying number.
ExploreWhich answer are you?
Brute luck, necessity, a multiverse, or design? Find where you land on the deepest question in physics — no wrong answers.
ExploreThe big questions
Plain-language essays on the anthropic principle, the fine-tuning debate, and why a certain AI lab borrowed the name.
Explore