I've thought about a similar game! It looks good, but please think about adding an English language option. There is also a minor glitch where the "Ataque" and "Explorao" buttons cover each other.
I understand, I'll update it, thank you for the information.
updated
Yeah, but buttons still cover each other - and not everything translated, like at the picture after LEVEL UP!
These are images generated by code, not buttons. I'll see if I can fix that.
Game updated, thanks for the feedback.