Some additional repos to consider:
tabletop — A table-top RPG game community site, built with Yii1.1
Miran-RPG — Is a text based role playing game
websocket-game — A RPG using WebSockets and Ratchet
keios-rpg-engine — Under development oldshcool text based rpg game engine
Once a week...... I send out a list of most interesting PHP libraries and apps.
Want to get it?