^E}{pressi()n$ is described as '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)' and is a educational game in the development category. There are more than 10 alternatives to ^E}{pressi()n$, not only websites but also apps for a variety of platforms, including Android, iPhone, Android Tablet and iPad apps. The best ^E}{pressi()n$ alternative is Codecademy, which is free. Other great sites and apps similar to ^E}{pressi()n$ are Code.org, Enlight - Learn to Code, Programming Hub and Codeasy.