Being just one lvl it feels... Fine? As a puzzle at least.
Will the transformations be reset with a new lvl? Will they carry on?
Or maybe the next lvls will be different puzzles entirely? I expected the run approach, starting at floor 1 ending at the last floor, but that doesn't have to be where this is going at all. It would make sense though.
When there is a correct answer each decission feels a bit meaningless. It would be cool if the player had to manage the tfs somehow instead of restarting each time something goes wrong. Some people like transformations only going up, and to those making it go down might not be that cool. I think it would be nice, also, starting smaller would emphasize the growth and that's nice.
Making it that sandboxy is dangerously hard in the design and balance end, but I think it fits greatly with the theme. If done right it would be really cool.
In any case, great work~