Download Dark Oberon
Dark Oberon is a real time strategy game that only allows you to play in multiplayer mode. I cannot judge this as either a negative or positive aspect, even if I am usually inclined to play single player games, this game proves to give a great gaming experience.
The first thing you will have to do in order to create your nation is to build a town hall. From there you will have different options to create citizens that will later build barracks for the army. From now on you are able to create a powerful army to defeat any of your enemies.