RegExOff

RegExOff is a regex puzzle game where the challenges come from other players. Write regular expressions to satisfy four requirement types — full match, partial match, no match, and captures — using standard JavaScript RegEx.

Community-driven

You can play without an account, or sign up to sync progress across devices and publish your own puzzles for others to solve. The result is a growing library of challenges at every difficulty level.

No strings attached

No ads, no in-app purchases, and no permissions required. Built with React Native and backed by Firebase for real-time sync.