Extremely promising idea but feels a bit unrefined as of yet.
Reminds me strongly of "Big Tower Tiny Square" where you navigate upwards in a maze-like tower. The problem I see here is that the proportions are a bit off. You keep smashing the left mouse button and you eventually get out of the maze.
If the walls were further apart OR the square was smaller you could build interesting levels just like in the game I mentioned above. Right now the only difficulty is that you have to traverse larger and larger mazes but since everything else the same you are not challenged to do anything else than spam left mouse click in certain points.
TLDR: what I'm getting at is that you need to choose if you want to create a good platformer in which case you need to alter proportions. Or you want to create a maze game but then you need to have more complex levels.
I had fun, hope to see more from you. Check out the game was referring to if my review is not clear (I'm not a native speaker of English)