About Rigid Digit
Rigid Digit is a free daily maths puzzle, like Countdown's Numbers Game but family-friendly and way more fun, for fans of NYT Games like Wordle and Connections. Combine five number tiles with + − × ÷ to hit today's target, at four difficulty levels (Easy, Medium, Hard, Extreme) for ages 8 and up. A new puzzle drops every day, so it's easy to make part of your routine: play it on your own, then compare results with family and friends to see who solved it best.
Coming to numbers puzzles by way of the 24 Game or NYT's Digits instead of Countdown? Rigid Digit will feel just as familiar.
A fiendishly addictive daily number puzzle.
Dan, a daily Rigid Digit player
About the Creators
We're Steve and Tui, a dad-and-daughter puzzle-making duo from Aotearoa New Zealand. Tui is 9, and together we're PuzzleBusters.
We created Rigid Digit to make number puzzles more welcoming for everyone. We love the challenge of Countdown's Numbers Game, but wanted to build a fun, tactile maths game that kids, parents, grandparents and friends can enjoy together, whatever language they speak best. Tapping tiles into place is a simple way to practise real mental arithmetic and get used to thinking a few moves ahead, instead of reaching for a calculator. That's why it uses five numbers, not Countdown's six: at most four steps, about as many as most people can keep in their head at once.
Rigid Digit is built to play beautifully on any device - phone, tablet or desktop - no app store involved. Add it to your mobile and it feels just like a native app: here's how.
Got a question, spotted a bug, or just want to say hi? Email [email protected].
Rigid Digit is free to play. If you'd like to help fund what Tui makes next, visit the tip jar.
Join the Chat
Got a result to brag about, or feedback on the game? Come share it in our WhatsApp group, or follow along on Facebook.
© 2026 Front&Back. Rigid Digit and its puzzles are original works, all rights reserved. The puzzles aren't for AI training, scraping, or reproduction.