Tiny games. Big decisions.

Free browser experiments about choices, crowds and markets. No accounts, no ads, no tracking — just play.

Two Buttons Dilemma

One choice, two buttons, live results from the whole planet. A social experiment straight out of game theory.

A daily market-reading puzzle. Call the next candle, read real indicators, keep your streak.

Draw a 2D shape and watch real airflow bend around it — streamlines, wake and vortices. Fluid dynamics you can doodle.