To play with others Dead Space 3 you need to set up LAN with Radmin VPN program and the game itself. It won't tk long - just follow these simple steps.

1. Download Radmin VPN
2. In Radmin VPN go to
   Network -> Join existing network -> Gaming network tab
   or you can create your own private network and invite your teammates
   
3. Make sure Radmin VPN will work smoothly by setting up your firewall

Dead Space 3 setup

How to host the game