github.com/vbence86/fivenations
Five Nations is an open source HTML5 game that uses cutting-edge technologies such as ES2015+, Babel, Webpack etc. The project is built on top of Phaser Community Edition and employs P2 physics engine. We employ modern CI flow with Jenkins, TravisCI and Docker.

The GitHub project above is fully set up for contributors and incorporates numerous issues intentionally specified for new joiners.
The game has been gaining ground and providing promising results on our Social Media channels. It is also going to be presented in upcoming game conferences in 2018, firstly at @WNConf in February, so any sort of contribution is welcomed!
If you are also an indie-developer and don't have much time for contributions just drop us a star on GitHub, it'd be highly appreciated.
TheSheriff
Co-Founder, Founder, Entrepreneur & Problem Solver
It would be fun but I have no time and game dev isn't my skill set. Hope all goes well though :)