The best way to learn Regular Expressions is to play with combinations. Our game introduces the parts, then challenges your ability to put them together. In Expressions, you'll solve a series of sorting puzzles, using real regular expressions to sort lines of text (strings)...

^E}{pressi()n$ is the most popular Web-based alternative to Finitris.
^E}{pressi()n$ is the most popular free alternative to Finitris.
- ^E}{pressi()n$ is Freemium and Proprietary













