Not too shabby for a Bust-a-Move clone! Certainly has all of the basic elements in place: controls felt smooth and intuitive, making combos gave a satisfying pop, and so on. However, ultimately it felt like a bit of a shallow clone and I lost interest rather quickly. For one, it was a bit lacking in juice: felt so bad that both the cannon fire and ball clacking into place didn't have any sound effects to go along with it, and you weren't rewarded for big combos with more explosive feedback. The game just didn't have much excitement or progression to it, what with the never-changing gray background and low-energy music, really slow progression of levels, and lack of any exciting bonus modes.
The one unique aspect of the game as well, being the Pong-style minigame, was a wash for me. I actually kind of found the Pong-style minigame a bit annoying: might've been because the collision physics of the ball/paddle were a bit wonky or maybe it just happened too often, but I preferred the cannon-style gameplay and was always bummed out when Pengu took a combo I was building up away from me: I wanted to get it using the cannon!
Again, not bad for a game jam game, as it is a good prototype for a Bust-a-Move game: with a bit more meat on its bones and some unique mechanics, it could shape up to be really good!