Tuning difficulty was the thing I struggled with the most when making this for sure, and if I were to update it it would definitely be to overhaul the wave mechanic to be a lot more "here's 20 skulls right away that u should deal with before the next wave to not get overwhelmed" (or something, but thatd be the vision at least lol).
Also, I actually intended the "you don't have to match every time" aspect! I think I would add more meta-matches (plus improve waves) to help the "why keep making matches" thing (rn 3 bombs can be matched to make a big bomb, but then big bombs just make big bombs again, and even then they usually just blow up before you can even "have" one of them on the board). This gives me an idea for a different game though, like a match 3/2048 situation... 👀
But anyway, thanks for playing and thanks for the feedback!!