Hi! I love these game types, it reminds me of Final Fantasy 7 rebirth minigame Fort Condor. While playing the game I was a bit unsure if I could just endlessly spawn knights and that the only limitor was the cooldown? It also took me a second to realize I had to press on the mage once I reached 20 gems. I loved being able to click on the gems btw, gave me something to do. I would differentiate colors between enemy and player maybe, but it wasnt too confusing tbh. I really liked it!
I just released a prototype, and I am reaching out to other creators for feedback too. It would mean a lot if you could check it out, thanks in advance :)