I think I had a couple of issues with the game, like the map being fully discovered from the very beginning. I watched the gameplay video and it should have been filled with the fog of war.
It was hard to understand what to do first due to the lack of any tooltips, but little tutorial text on the game page helped to get me going. I also watched a video after I played the game to make sure I got the things right.
I like the unit evolution idea. The music sounds fitting. It’s always great to see an RTS submission. :D