You can find the source code for the game here : https://github.com/BigNoob/DEMOG
Demo of the space game: https://cba1.herokuapp.com/home1
Demo of the jump game: https://cba3.herokuapp.com/home3
Demo of the dictator game: https://cba5.herokuapp.com/home5
Demos can be laggy as they run on free servers. Ask for a friend to connect at the same time as you, otherwise wait for 10s and you will play with an Artificial Intelligence.
Games under MIT license.
Any question please contact me.