Kohan: Immortal Sovereigns isn't just another RTS with a few new twists to it. It does have many tried and true RTS elements in it, but in the end it just seems to have done better than most else out there. The single player mode has you taking control of a Kohan, one of a race of immortals who ruled the world peacefully, and tasking you with ridding the land of an overwhelming evil. Nothing impressive with the story line here, but if you can look past that, there's plenty of great gameplay to be had.
The single biggest difference with Kohan as compared to the rest of the games out there is how units are controlled. Instead of commanding individual units, you command them in groups of up to seven people. These groups are made up of four front line men, two supporting units, and either a Kohan or generic Captain in the middle to command them all. Before you even get into battle, here is where a lot of the strategy takes place. Plenty of units are there to choose from, and figuring out the right combination of them to take care of certain tasks is a job in and of itself.
As with any other RTS', there are resources to be had in Kohan. Gold is your main resource, and can be found in the various gold mines around every map. This is the only resource you really spend. The others, like iron, wood, and mana, are made at your cities, and instead of having a definite amount, you have a balance that is either positive or negative. When they're negative, they start eating into your gold stockpile, so keeping them up is as important as gathering gold.
To keep the replay value fresh, there are other playing modes besides the single player campaign. Plenty of skirmish missions are available, which quickly let you get into the action without much setup. Once you get bored of the single player story [shouldn't take long], these missions are a godsend. Net play is also available, and we all know there just isn't anything like playing against another human.