Never Roll a 1 is a simple yet addictive probability game. Your mission? Roll a standard six-sided die 10 times without hitting a 1. Sounds easy, right?
With only a 16.2% chance of success, most players will fail. But that's what makes victory so sweet! The game distills the essence of probability into its purest form: a single die, a single rule, and ten rolls standing between you and glory.
Each roll has a 5/6 chance of success (any number except 1). To win, you need to succeed 10 times in a row:
This game is a perfect demonstration of how probabilities compound. Even though each individual roll seems favorable, the odds stack against you quickly! For a comprehensive breakdown of the mathematics, including probability tables, win streak odds, and the gambler's fallacy, check out our Probability Guide.
We wanted to create a fun, educational game that teaches probability in an engaging way. There's no better teacher than experience, and nothing drives home the reality of compounding probabilities like watching yourself fail on roll 9 for the tenth time!
Probability is one of the most useful and most misunderstood areas of mathematics. People consistently overestimate their chances when events need to happen repeatedly, and they fall prey to the gambler's fallacy by believing past outcomes affect future rolls. Never Roll a 1 makes these abstract concepts visceral and immediate. When you feel your heart racing at roll 8, you are experiencing compound probability in a way no textbook can replicate.
Under the hood, Never Roll a 1 is a client-side web application built with plain HTML, CSS, and JavaScript. The dice rolls use the browser's built-in pseudorandom number generator via Math.random(), which produces statistically fair results for gaming purposes. The rolling animation cycles through random faces before landing on the final result, adding suspense without affecting the outcome.
The front-end styling is handled by Tailwind CSS, loaded via CDN for simplicity. All game state, including your wins, streaks, and attempt counts, is persisted in your browser's localStorage. This means your stats survive page refreshes and return visits, but they are tied to your specific browser and device. There is no server-side game logic; everything runs in your browser.
The competitive leaderboard is powered by Google Firebase, using Firebase Authentication for sign-in and Cloud Firestore as the database. When you save a score, the game stores your display name, win streak, and attempt count. Scores are ranked by streak length first and attempt efficiency second. The daily leaderboard resets each day at midnight UTC, while the all-time leaderboard preserves the best performances across the game's entire history.
Your score is only updated if it improves on your previous best, so you never have to worry about a losing streak erasing a strong performance. Sign in with Google, choose a display name, and start competing with players around the world.
Never Roll a 1 was designed and developed as an independent project to make probability fun and accessible. The game uses the following open-source and third-party technologies:
Have feedback or want to report a bug? Visit our Contact page. For common questions, check the FAQ.