Game was good and very well designed to be progressive with step by step achievements. But after playing for a few days I have realised that my game progress was not being saved. Once I played continuesly for a couple of hours,wherein I have reached over 750+ level and unlocked over 14 trains and closed the game. This was never saved and I lost all my keys which I used to unlock trains(they never came back) and I was back on 608 level. Now the game is UNINSTALLED!!