Wow, thank you so much for such detailed feedback!
Well, the idea for the frozen letters was to build around their abilities as you are able to see what the frozen tile's ability will be once it comes into play, maybe it wasn't as apparent as I originally thought.
Congratulations on beating it! I believe you are the second person ever to beat it! At least to my knowledge. I'm still yet to beat it myself :D
I probably would have added some small sound effects for navigating UI, but I ran out of time. The game wasn't properly finished until 24 hours before the deadline and then I spent the rest of the time fixing bugs and adding some small elements I was advised to add by my play testers and that was it.
I did also notice that sometimes you're stuck waiting on a tile or two for the round to finish. I couldn't come up with a way to not let that happen. Having the abilities trigger when the letter has already turned green would work in theory, but it wouldn't have worked for me because of the way I setup my state machines. I wouldn't have had time to fix it.
It makes me very happy to hear that you loved it!
It's possible the game end screen isn't working as intended, I didn't do much testing on it which is definitely an oversight on my part.