Dune II: Battle for Arrakis
This was one of the first real-time strategy games. The game takes place on the planet Arrakis were three houses, Atreides, Ordos and Harkonnen are fighting for the control of the spice melange. To gather spice you send out your harvesters and then you use the spice to get money and build your base so you can destroy you enemy. Each house have their own weapons and tactics and building a defence tower inside the enemy base is always fun.