On a map of Europe, you build track to fulfill your contracts.
On his turn, each of the players chooses one of 6 action phases and triggers it. All players act while the triggering player has an advantage (like in Puerto Rico). In the contract phase, you choose contracts that include a start city, a destination city and sometimes 1 or 2 in between. It says which type of locomotive you are allowed to use and which and how many wagons.
In the building phase, you connect any 2 cities by paying for the track you build. In the market phase you buy locomotives and wagons, in the auction phase you must offer at least one locomotive or wagon that is not yet part of a contract. In the reward phase, you get money for your connected cities and in the state subsidy phase you receive a locomotive or wagon for free. At the end of a round all players receive income according to their partly or completely fulfilled contracts.
After a player has an agreed amount of fulfilled contracts, the game ends and you get points for fulfilled contracts, income and connected cities and minus points for contracts not at least partly fulfilled.
—user summary