What games do you think of when someone mentions that they are a gamer? For some, multiplayer online battle arena games like League of Legends, or Defence of the Ancients might come to mind. Still others might talk about shooter games like Call of Duty or Overwatch. There are also plenty of other games like Civilisation or Minecraft, which let players start with nothing and build grand structures or empires. Many of these games have something in common- staying power. They have devoted commun...