No way im not checking out the other "Siege" games!
Very cool implementation of a AutoBattler! I liked the laning system. Everything worked smoothly, the sfx and music paired well, and the UI work was very clean! Nice touches on the cooldown indicators for spawn and "train" time for the different troops.
My feedback would mainly be on balancing, perhaps tweaking down of the training population costs. The basic troop can barely stave off the attack from the start, and some combinations of enemies in one lane (e.g. knight + archer at back) can be unforgiving. I didnt manage to try out all the unit upgrades (only could handle spawning in an archer), though i very much would have liked to.
Perhaps a unit crossing the topline unscathed can also be returned (either spawned at start point, or added back to the population pool.
Very solid entry all round!