Me and my partner are planning to write a Matryoshka themed game (http://en.wikipedia.org/wiki/Matryoshka_doll).
It will be a side-scroller/platformer and the main idea is that the character will be able to change her size (with at least 4 or 5 sizes) to fit into small areas.
Until now I made a few side scrollers using the tile technique, using a matrix of Tile objects. But since the new game need to be able to block the passage of the character in cretin situations, what approach should I take?
I had a few ideas in mind, like making the the smallest possible doll the size of a single tile, but I'm afraid that it will limit the size of the sprites.
What would you do?