Game Dev Story on the Android.  This game really takes you through an engaging process of making games without all the long meetings, hours and stress.  It is incredible at how much the developers really put thought into making such a simple game really interesting. From the game awards to the new game systems that continue to be announced. Which leads to the question as president, "Do I want to invest on this new system? Or do I want to invest on an already established system?" 
These kind of decisions hit you all the time in Game Dev Story and it is really exciting to see the consequences.