Games & Probability
Dice Probability for Beginners
Understand die sides, totals, advantage, and simple odds with examples you can test in an online dice roller.
Read guide →Guide collection
Games, Dice, Cards, and Probability
Games make probability easier to see. A coin has two possible sides, while dice and cards have larger sets of outcomes. These guides use simple examples to explain chance and help you set up fair games and brackets.
Guides in this collection
Read the guides in this topic cluster in the order that best matches your task.
Games & Probability
Why Fair Coin Flips Still Form Streaks
Learn why heads and tails do not need to alternate and why a fair coin can produce streaks in a short trial.
Read guide →Games & Probability
How Random Tournament Seeding Works
Set up a random single-elimination bracket, understand byes, and decide when ranked seeding is a better choice.
Read guide →Put it into practice
Useful tools for this topic
Put the ideas into practice with these related randomizer tools.
⚄
Dice Roller
Roll standard polyhedral dice, combine several dice and apply modifiers for games or probability work.
◐Coin Flip
Flip a virtual coin once or run a larger trial with live heads, tails and percentage totals.
♣Deck Shuffler
Shuffle a complete deck, deal hands and keep track of the cards still available.
⌁Tournament Bracket Randomizer
Seed participants into a single-elimination bracket with automatic byes and printable rounds.