I can only get 4 wired xbox360 controllers to work. How to make more than 4 usb 360 controllers to work in game?
Sorry, I'm using Electron which is based on Chrome and Chrome only currently supports 4 USB controllers :( Hopefully they'll fix it soon and I can post a new version. Until then if you don't want to use smartphones as controllers you can go to https://greggman.github.io/hft-boomboom/ in Firefox and it should support more than 4 USB controllers.