I enjoy word games, so this was really fun! I like that the enemies only move once you input a word. It makes the game much more strategic rather than some word games where it's how fast you can input them. It gives it a different niche in the category of word games. The different enemy types work well together forcing you to think of different words that might meet the most criteria.
It was a bit frustrating though on the "spawning algorithm" at times. If two bubbles who need different last letters end up at the last line I'm going to take damage. In this case it's usually my fault since I didn't deal with them earlier. However at times I'll get a "9" bubble and an "8" bubble right next to each other that both spawned from the abyss to an early enough line. In these cases, no matter what move I make, I'm guaranteed to take damage. I wonder if there's a way to make the bubbles spawn in such a way that (the word number bubbles especially) there's always a way out with skillful enough play.
Great job overall! I might've spent a bit too much time playing this one haha
(Best was 42)