Really nice game! Although I wasn’t quite sure what I was supposed to do with the accuracy panel, I really enjoyed the gameplay loop and the autotiling system—it kept me hooked.
The only suggestion I have is that you might consider moving completed rows to a separate panel instead of making them disappear. That way, players could see the biome they're gradually building. It feels a bit sad to spend time creating a beautiful landscape only for it to vanish as soon as the row is completed.