An idea
A puzzle maze game where a person has had their orderly and minimalist world wrecked by chaotic and complex villains.
They must collect a series of treasures which will make the game more and more minimalistic(definitely graphically, not sure about mechanically).
Therefore each level is gradually more and more minimalistic until you collect the final treasure and return your land to its pure and minimalist state.
Now to get working on the game mechanics and assets.