Master key

Face a sequence of mysterious doors. Unlock them all, if you can, to discover the secret of this strange place.

Some math involved.
A little background on divisibility should help.
Hopefully mathematicians can enjoy thinking about it a bit more than just what's needed to finish the game.

Made for the Thinkycon 2 gamejam.

Inspired by the talks :
 - on the parallel between teaching and games (although betraying most of their points)
- The Rules of the Game :  Modelling Puzzles as CSP
- Under the Hood of Stumbling in Puzzle Games (I really tried to make stumbling anecdotal, I hope this design works)
- Making Multi Purpose Puzzles.

Indulged by the Silly reasons not to make a puzzle game talk (I would never have dared create let alone publish this without this talk).

Also winking to :
 - Mathematics for Puzzles 2
 - How to make cute, speedy 2D Animations in Google Slides

With sincere apologies to everyone who talked, and mostly to you, the player.

Final artworks :

sprite borrowed from Charlotte Pang, I hope she doesn't mind. Photo by Jared Rice.

Some numerical facts borrowed from Eric Sopena (final doors) and Grégory Train.