Regex Crossword Mobile
Regex Crossword Mobile is the app version of Regex Crossword, the popular regular expression crossword game. To work on a mobile device the whole UX had to be reimagined to support touch and a smaller screen size. It has an interactive tutorial to introduce newcomers to regular expressions and an improved puzzle builder allowing the community to contribute both grid and hexagonal puzzles. A leaderboard tracks the top 50 players.
The game is developed as a PWA and featurred in the native app stores for both iOS and Android. It's using HTML5 API's for drag and drop and service workers to be able to run offline.