Massive Decks is a clone of the excellent Cards against Humanity using the CardCast APIs (try their app if you have a ChromeCast!) and is inspired by Pretend You're Xyzzy (where you should go if you want to play with people you don't know).
You can try a version running at http://massivedecks.herokuapp.com/
This is an open source game developed in Elm for the client and Scala for the server. We also use the Play framework, less, and Font Awesome. Bug reports and contributions are welcome on our GitHub repository.