Oh! Look at this advert of the app "blabla". It sounds really interesting, you can play a game in which the environment influences the gameplay and it says that it is officially for people who are on the way by train.
I just have to download it from the appstore and that's it!
There is a small Tutorial. I see that it is an app where you are a train and you have to collect passengers and goods, switch the lines while driving and avoid crashing into objects. While you play the game the environment influences your gameplay. That means that your actual speed, time, date and weather is represented in the game.
First it asks me about my start and my end train station. That is also connected with the SBB train stations. So you can find any train station from SBB.