If you want to use Xbox 360 controllers, (which I normally do) you can buy one of these https://smile.amazon.com/Microsoft-Xbox-Wireless-Receiver-Windows/dp/B000HZFCT2/ref=sr_1_1?ie=UTF8&qid=1486643887&sr=8-1&keywords=xbox+360+wireless+controller+adapter

Which can link up to 4 controllers. If you have bluetooth on…