The car racing game Drivers and Gods is a pure multiplayer game. To start a
race, players have to join a network game. Click on "Play" in the main menu to
find a matchmaking overview. On the bottom you can host or join a local area
network (LAN) game. The second option given is to play over the internet.
Create or join a online game using the matchmaker interface. The online game
traffic is sent over a relay server hosted by Unity in the cloud, that should
avoid issues with firewalls or NATs. Note that the LAN matchmaking however is
the safer method.
Pro Tip: You can choose your player name and your car using the wrench icon
on the lower right in the main menu.