Very solid and fun little game with a lovely art style and some great music! I absolutely adore the protagonist (totally not biased btw), and the little portrait that reacts to things happening in the game is a great touch. In general, the HUD strikes me as very well made for a gamejam game!
Movement was fine for the most part, though double-tapping to sprint took some getting used to, and jumping seemed a bit awkward at times, with the character getting stuck on walls and ledges. The bite attack was a lot of fun to use, especially with the size upgrade - although I think it'd have been even better if it could also collect shinies for you! I never really got around to using the shield much, but the beam attack was very satisfying to pull off. Also, some way to heal outside of dying would've been nice as well!
The main mechanic took me a very long time to figure out, which was probably in part because I'd never heard of the toy before (it does sound very rad though)! I think the part that had me the most confused was that the close-up view just showed the player on every screen - I think the connection between the rooms and the cubes would've been more obvious if the cubes you aren't currently in showed a little preview of their corresponding room instead. Regardless, it's a very cool and unique mechanic that could definitely have a lot of cool uses in a bigger game, and the idea that the whole game world is actually contained within the cubes is pretty neat! (Although, I could also see how moving the cubes around might potentially become tedious with a bigger map size.)
The bosses looked cool and had some very impressive attack patterns, though the wolf's arena felt a bit small for the fight, while on the other hand, the Roc seemed to spend a lot of time off-screen. I had a hard time hitting her with melee without taking damage from the claws, outside a few times where she decided to float just below the central platform and be really easy to hit. In the end, I spent most of the time trying to avoid damage while waiting for her to be in a good spot where I could hit her with the laser, which chewed through her health pretty quickly. The more aggressive second phase was a neat touch, even if a bit annoying to deal with. Overall, a very cool and climactic final boss, although I would have preferred if she spent more time actually being visible on-screen!
One thing that I guess an updated version of the game could elaborate upon is the "flickering screen" issue (glitch? virus? running out of battery?) from the opening cutscene (which was also very cute btw). Since the Roc was just trying to protect her domain from the problem, I don't think beating her up really made things much better? Either way, I had a ton of fun despite a few minor issues, and the story and the world definitely have tons of potential for a bigger game!