Thank you so much for the feedback!
Concerning the credits, I had that in mind but the deadline was so close that I didn't have time to douch of what I wanted (including adding music and sounds, and the crediting the artists); I submitted the game 3 minutes before the deadline!
I thought of setting the scrolling between cures as number keys but thought that scrolling dynamically through the cure array would be better, but I'll surely put that as an option once the jam is over.
Once the jam is over, I'll put all of those edits into action and will upload only the application, so be sure to try it then and tell me what you think!