A pretty scuffed version of CSGO for the browser, online.
App is live at: https://3dfps.glitch.me/
Server is hosted on http://herokuapp.com/
Feel free to fork and make changes, i can see potential, like maybe you can make it Like minecraft. :D
[note you'll need a new server]
ReferenceError: SimpleFPS is not defined at window.onload (/main.js:75:3)