Tunngle is a VPN connection program exclusively designed for multiplayer games, allowing you to play with your friends over the Internet as though you were using a local network.
There are many different programs that you can find to play multiplayer games like this, but Tunngle stands out because it has way more features than the competition, including displaying a list of networks and users playing different games, as well as the ability to access any one of them with just a click.
Each game network offered by the program comes with a chat that you can use to communicate with any active user on the same network, making it easy to communicate whenever you want.