Fun game! I liked the different shapes, they made it kinda fresh compared to a regular suika-like game. One possibly issue - the largest dragoon size doesn't combine with itself to disappear, so there's an upper limit most suika-likes don't have.
Thank you ! Personally, I like the fact that the blue dragoons don't merge and disappear, giving the game that “limited” feel of a true Suika Game. It's possible to add an option to make the game “endless” in the future.