Super Mega Bowl makes free browser tools for anything you would normally settle with a coin, a die, or a wheel - and a Learning Center that explains the probability behind them in plain language. Nothing to install, and every tool works without an account.
Apps
Everything here runs in the browser on desktop and mobile.
Probability Learning Center
Sixteen plain-language guides to randomness, probability, and the mistakes people make about chance. Every idea has a matching tool so you can try it yourself.
- Understanding Probability: A Beginner's Guide What a probability actually is, how to read it, and the simple rules for combining events.
- What Is Randomness? What makes something random, where real randomness comes from, and why it rarely looks the way we expect.
- The Gambler's Fallacy Explained Why no coin, die, or wheel is ever “due”, with the Monte Carlo 1913 example and the math of independence.
- Is a Coin Flip Truly 50/50? What a fair coin really means, the physical biases research has measured, and why a simulated flip is fairer.
- The Law of Large Numbers Explained Why results settle toward their true odds over many trials, and why that never predicts the next one.
- How to Pick a Random Winner Fairly Running a raffle everyone can trust, the mistakes that quietly make a draw unfair, and handling multiple winners.
About
Super Mega Bowl is an independent project. The tools started as a better coin flipper - one that could use your own images, flip a hundred coins at once, and fill a screen for a room full of people - and the Learning Center grew out of the questions those tools kept raising about how chance actually works.
Everything is free and works without an account. Creating one only adds saving: your custom coins, dice, and wheels follow you between devices. Questions or a bug to report? Get in touch.