Back in the day, playing American Truck Simulator online with friends would typically require installing and running a mod. However, a recent update to the game has made this much easier. Now, you can officially (without any mods) play ATS online, with your friends, using its official multiplayer mode. This allows players to host their own sessions, either privately among friends or make it open to the public. In this multiplayer mode, you can do hauling jobs together with your friends. Or, partake in lengthy convoys with one another. All players in that multiplayer session will experience synchronized time, AI, and weather, too. For the time being, you can only add 8 people into a session at a time. However, in due time, we may see updates that would allow more players to join a single session.