Jack Says is a web-based multiplayer game. It's a "Simon Says"-like (Jacques a dit in french) in which you need to follow the instruction given by Jack. You are competing against any person connected on the website... so virtually the whole world!! (tested with 20 players!!! ... :p)
$ sudo pip install --upgrade -r requirements.txt
$ python runserver.py
* Running on http://127.0.0.1:5000/
* Restarting with reloader
This game can be deployed on Heroku. An instance is running here.
Jack Says is under the GNU Affero General Public License version 3.