So you want to create a massively multiplayer strategy game.  How do you go about designing something that will keep players coming back. In a MMORPG, players are building up their characters. And those character die but they come back.  In an MMORTS like this where city creation and its customization are what the player is worried about, then losing a city becomes a serious problem.   Therefore, the first challenge is to narrow down what exactly the player will become atta...