Hi,
Great game! Developers you should be proud. Thank you. The graphics are absolutely great! The units and tech trees are original. This game demonstrates a lot of creativity.
A few gameplay issues could be improved. I look forward to more content, like new factions being added. It would be fun to play with all the stereotype fantasy units (paladins, elves, dwarves, orcs, etc), however the originality of this game is one of the best things going for it, so maybe not.
A few extra hotkeys would be very useful.
n - next unit
ctrl n - next unit of the same type
i - idle worker/initiate
Regarding units, the archmage seems horribly underpowered. He has so little HP that he dies almost instantly. I think he should have 1000 HP. I'm not sure if the attack affects a group of enemies or hits moving targets. If it doesn't, then it should. For the money it seems like getting a few extra battlemages is the way to go.
Archer's should have an advancement. It could transform into a Ranger with higher stats.
Workers should have a base attack. Nothing special, just a range 1 axe that does about 3/5 as much damage as a swordsman or demon.
Magic faction should have a defensive building of some sort.
The AI is OK with its armies, but really stupid about buildings. The AI should build castles near new gold piles. The AI should also tower up near its resource collection points.
Towers should be cheaper and weaker.
I medium AI, slightly less than ultra, would be nice.
Workers can use tech centers or summonor's guilds as resource drop off points. But, it seems like only the worker who built it will use it. Other resource collectors will walk to the nearest castle/mage tower regardless.
It should be easier to task multiple worker to build a building. Currently you must re-order workers to assist after the first one lays the buildings footprint..
Overall through excellent work!