A couple of weeks ago, my friends and I built a word game during a hackathon and got a great reception from people who played it. Previous HN thread: http://news.ycombinator.com/item?id=3750068
My friends have cleaned up a lot of the UI and the code, and have published it under a new name. It uses now.js in the backend, and is all html5/js. Let me know what you think!
The game works well on mobile devices too. iPad has the best experience :)
The game works well on mobile devices too. iPad has the best experience :)