A bit too difficult, no tutorial, you can only upgrade "towers" once, which isn't obvious at first, if different units do different amounts of damage due to weakness then it isn't obvious, no way to pause the game in case you need to step away or speed it up for that matter, no upgrading your base that's getting attacked, very few units which combined with the few upgrades makes it kinda boring, didn't notice that you're supposed to pick up materials from the path so I may have missed out on materials early game if there were some then, very short map (which is good because I wanted the game over with quickly and bad because it made it boring for "tower" placement). But the art is good, and it doesn't have annoying sounds (which come to think of it I don't know if I heard any sounds the whole game?).