Hi baimgamingroberts, if you go on the official TSW website and click on 'Mastery', it'll give you all the information you need. You just need to sign into your Dovetail account. https://live.dovetailgames.com/auth/login?returnPath=/live/train-sim-world/profile/mastery Tier 1 unlocks a background for the menus. Tier 2 unlocks scenery within the route, it could be a car, or balloons in the sky, etc. Not much, but it's fun to acquire. Have a look at the attached pics.
