Lots of money and population.
Your objective is to create an army with the limited money you possess and to wipe out the enemy and their fortress (situated to your right).
Your main source of income is an oil well situated just outside of your stronghold - make sure you don't lose it to enemy forces, or you may find yourself pennyless and defeated.
Starts off easy enough, but gets very difficult as the stages progress!
When created, all units will by default begin moving towards the enemy. Units can be clicked on individually or as groups (by drawing a square) - once selected you can click on another location where you want the units to go.
Different units have different strengths and weaknesses - it's up to you to figure out which units work best where.
Taking Enemy Postions
Foot-soldiers can be used to take enemy turret positions and also the enemy oil well.
You start off with only 2 unit types. You need to conduct research to acquire new military units (land, air and sea). Cost of research depends on what you are looking at getting.
Fortress Defense System
Your fortress comes equiped with a weapon that can fire various projectiles towards the enemy. This weapon by default fires each time you click a spot in the playing area. You can select which weapon to fire by simply scrolling through the troop selector menu.
Using your fortress defence system costs money - so each time you fire it will cost big bucks depending on which projectile you have selected.
Mouse point and click.