
Tau  Tau, twice pi  the first 100,000 digits. Print and keep this handy reference, in case you ever forget a digit. 

primes  Ten thousand prime numbers 

Falling time  3D time, constantly falling. 

People in Space  How many people are in space right now? 

How fast  How fast are you travelling right now? 

Correlated  Odd correlations 

Paper  Keep folding the paper 

xmas clock  Is it Christmas yet? 

Robot Jobs  Will robots take your job? 

Gridwatch  The UK's National Grid Status 

CurrentMillis  How many milliseconds is it since the start of 1970? 

List of numbers  A list of numbers (incomplete) 

Googolplex written out  The number Googolplex written out in a book and a series of PDF documents. 

Octamatics  The power of eight 

Boogie maths  Maths explained through the medium of dance 

The Universe is Dark  An incremental game about lighting up the universe. 

3n+1  A simple but unsolved mathematical problem 

Primes  Like 2048, but make the biggest prime number you can 

Sudoku slam  Online sudoku puzzle generator/solver 

The Mathematical Danger of Voting  Elections might seem like they produce results people want, but that isn't always the case. 

Paperclips  Build your own paperclip empire 

Other Worlds  How old are you in Martian years? 

Sleep Calculator  If I go to sleep now, when should I wa... ZZzzzzz 

Secret Santa  How to do Secret Santa properly 

2048  Remember this? Use the arrow keys to combine blocks, try to reach 2048 

Binary comes to life  011010011 

Binary Piano  Who knew counting could be so musical? 

Pi song  You know the words, sing along! 

Days since incident  Tracking natural disasters on Earth 

Mousepoint  A clickless mouse game 

Combination lock  Addictive "Crack the code" math game  progressive and multiplayer modes. 

Wealth inequality  Scale graphics of wealth inequality in the USA 

Spend  Spend Bill Gates' money 

Orbis  How long would your trip have taken in the Roman Empire? 

Sell! Sell! Sell!  Scroll down for some scary capitalism statistics 

Kamogo Lottery  How long will it take to win? 

Nonogram frvr  Nonogram puzzles. Gorgeous! 

McDonalds every second  What McDonalds sells every second 

Progress  Visualizing cycles 

Dice Simulator  Seconds of fun. Roll 6 ones? 1 in 47,000 chance 

Covid Calculator  Interactive epidemic explainer 
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