The cargo is rolling into the yard and it’s up to you to organize and manage it, making sure everything is where it’s supposed to be and readying your train for departure.
In Yardmaster, 1-5 players are racing to see who can load their train first while adhering to the connection rules (Railcars may only connect if they are the same type of cargo or the same number.)
The first player to fully load their train becomes the Yardmaster! Will you rule the rails?
Source: The Developer Website.