To give your minds a blow, do you remember these simple games?

http://www.primarygames.com/seasons/summer/games/sliders/summer_slide.htm

And, do you know that Telltale Games used this principle for a scene in the last of their row of Wallace And Gromit games?
(BTW, they are as good as the initial movies with Wallace & Gromit, and worth each cent that you pay for it.)
If not take a look:

http://www.youtube.com/watch?v=qsYdROM9WrE

What are the twists they add to the simple slide puzzle?
Each stone becomes a person, and each rejects certain neighbours, and gives characteristic commentaries.
IMO, it seems sort of unfair to grab their idea and form a complete game out of it, but it is quite tempting.
And, maybe, they don't mind, if we develop it further to an origin of its own, do they?