Running two windows at the same time from different inputs?

I have one gaming PC. My girlfriend and i like to play certain games that are coop. Lets just use the game terraria as an example.

Terraria has no Local split screen multiplayer but it can play online over a server.

I have 2 nice monitors and a PC more than capable of running two instances of the game.

Using a program like sandboxie i can easily launch both games. issue is the "active" window is the only one that accepts inputs. I can block the contoller input from sandboxie pretty easily and i can even make it so the sandboxie accepts inputs from only controller 2.

problem is whichever window isnt active doesnt respond.

Any work around possible for something like this.

Keep in mind this is not piracy question. Only talking about legally acquired games.

Submitted September 30, 2017 at 12:53PM by Sbomb90 http://ift.tt/2xFU5Je