I can't even begin to describe how gorgeous this is! Not only did it teach me that I should probably go back to 9 years old to learn simple spatial reasoning (don't judge me, I've never played a tangram thing before), but it was wonderfully calming! The colour palette you created works super well and you've done a great job of combining patterns and shapes into a fun and engaging puzzle game. Some simple controls/tutorial, even if it were a few lines of text, would have been helpful in the beginning, but I do have to say that I absolutely love how you kept to a theme of animals for the puzzles. This all works really well together and I'd love to see it be developed further - well done! :)