I think this is a super cool idea. I love working with altered perspective kind of things like this. The idea of trying to simulate a single dimensional being is really interesting.

The first thing I think this game could benefit from is a little bit of color. Right now I think the hardest part of maneuvering the maze is not that it is 2D but that it is monocolor. I think it would be much more interesting if the further things were they might be a slightly different color. Additionally, this is a slightly strange example of 2D organisms I think. It might be more interesting if things were moving or perhaps if there was an element of gravity.

Life must be hard to be a 2d creature.

It is really interesting to  discuss about the pov of a 2d world. Just like we can't feel the flow of time, how would they feel the z axis. And how do they understand time??!

The creativity is very good, but I think the mechanism is lack of polishing. I wish people could still use 2d pov to finish the game. Maybe you can add different color on the wall and limit the time of player using cheats. I think this would be a wonderful game.