I'm surprised I've not seen anyone on here praising this game. You make every sprite, background, element of music, and do all the coding to make microgames and comics. The interface takes right from the pages of Mario Paint, even keeping icons and layout consistent, and has animation/onion skinning capabilities.
I don't have a camera on me or I'd take some pictures of the interface that I figure would do it more justice than the ones I could find. The color palette is limited, but that's half the fun.

(this is during one of the built-in tutorials)
I'm no professional pixel artist or game developer, but this title has surely gotten me excited and confident in my abilities for advancing beyond their comprehensive engine (even if it is nothing more than a toy with open source components that lets you take it apart and build new toys from

) and having a better grasp on the logic of coding.
Demo video of Matt Bozon of Wayforward (Shantae's Revenge, etc) making a Shantae microgame (4 mins 34 secs):
LINKI've already made like 3 games that would make Gallagher proud with exploding watermelon sprites.