The world is over.
But it's not quite over for you... at least, not yet. And now that you've got thousands of tonnes of locomotive at your disposal, you've got the definite advantage over the infected hordes. This is The Final Station. The real question is whether or not you'll help the survivors get to their destinations.... or let them die and loot their bodies. Sometimes people can be more trouble than they're worth.
Travel by train through a dying world. Look after your passengers, keep your train operational, and make sure you can always reach the next station. Make your way through swarms of infected at each station. Explore mysterious and abandoned stations looking for supplies and survivors.