PICO PARK is very flexible because every level adjusts to the total number of players. So you can play with as many friends as your like.. and you can control PICO PARK with your iPhone/iPad/Android.
The only COD that you can play without a Core subscription is Warzone: //xbox/games/call-of-duty-warzone Besides that, every other COD and paid games, like FC24, GTA V, etc.