Simulators

Interactive Monte Carlo & Probability Playground

Simulate complex probabilities, casino odds, financial paradoxes, and logic games in real time.

Switch or stay? Watch the two win rates split apart over a million runs.

Double after every loss and find the exact point where the house edge ruins you.

Expected value per hand for any player hand against any dealer upcard.

Keep buying tickets until the jackpot lands. Track money spent against prizes returned.

How few people you need in a room before two of them share a birthday.

Survival odds by chamber count, bullets loaded, and whether the cylinder is re-spun.