World in Conflict is the best strategy game you can by for the PC. You definitely get your money's worth and more.
World in Conflict has a point system that determines how many and what kind of units you can have. You use the points to call in units and when those units are destroyed, the points are slowly given back to you. World in Conflict is based on the rock paper scissors style gameplay where that that beats that, but is defeated by this which is also defeated by this. For example Heavy Helicopters chew up tanks for breakfast but medium helicopters turn heavy helicopters into scrap metal and anti air rips through both types of helicopters but are vulnerable to tanks.
There is another point sysyem called "tactical aid points" which you get from fortifying and capturing positions to hurting the enemy. You Use these points to call in aid such as airsrtrikes, artillery, bridge repair, (my personel favorite) nukes, and etc.
Its multiplayer is excellent. it is more of a team strategy game than anything else, since you cant chooose to control everything. You have to pick a single role such as armor, infantry, etc, which are effective against some roles and weak against others so you have to rely on your allies. Only one complaint for the game, you need a fast computer to handle its almost photo realistic graphics. All in all it is an excellent game and if you have a fast computer, definitely get it.