I recommend this game for fans of fantasy turn-based strategy 4x games. Made by the developers of Domnions, it's a different take on the genre from the Dominions series or anything else out there. It is faster paced and more about combat than most games of this type.
You choose from a roster of unique leaders (from Necromancers to Troll Kings to the CoE equivalent of Hobbits), and start on a single fortress unique to your leader. You can capture farms, towns, cities, fortresses, and magical sites. Each turn is a month and the seasons matter - winter will slow your troops to a crawl and cut your income. Combat is non-interactive - you can set the spells you want your casters to draw from before battle but that's about it. There is no diplomacy - everyone is at war unless they are on your team from the start. The interface is quite intuitive and right-clicking on just about anything will bring up an explanation.
The best part of this game is how uniquely each of the 18 leader classes plays. They each have different magical resource requirements, spells, units, methods of recruiting units and progression paths. For instance, as a Demonologist, you will need people to sacrifice to summon demons and upgrade your casters. That makes controlling towns and cities important. In contrast, the Witch powers her summoning spells and upgrades from fungi gathered in forests and swamps - settlements are far less important to her. I think this is absolutely brilliant game design and the most fun in the game is had by learning each class and struggling to stay alive in the first 50 turns while fighting neutrals and other computer players.
The game is not without its flaws and frustrations. The graphics are charming but primitive. The lack of control over combat can be frustrating - you can lose battles you should win because your idiot spellcasters won't pick the correct spell. It is difficult to hold territory because your captured settlements don't generate any militia (except for a few leader classes). You can and do often lose a key city or mine to a rampaging group of 3 small snakes. The map generator tends to make somewhat wonky maps - each terrain tile seems to be independent of its neighbors so you are unlikely to see a large forest or mountain range. Instead you'll find randomly clumped tiles that don't look like realistic geography. And after you've survived the difficult but enjoyable early game, the mid and late game tend to drag on. It's too bad you can't develop any of the settlements or fortresses (or even build roads to quicken the horrendously slow pace of your armies). That might add an empire building aspect to the game that would keep it interesting beyond the first 50 turns. More rituals for each class would also be nice. As it stands, most classes basically have a weak summon, medium summon, and strong summon spell. Rituals affecting the world would add a lot to the game. For instance, if I could blast those aforementioned 3 snakes with a fireball or cast the world into eternal darkness, the mid and late-game would be a lot more fun. Let's hope CoE 4 adds more depth to the mid and late game.
However, as it stands the game's advantages heavily outweigh its shortcomings. I found it to be a breath of fresh air and greatly enjoyed playing a game with each of the 18 leader classes. If you like fantasy TBS games and are not turned off by the primitive graphics, you'll find it to be a treat.