Super cool idea!  When I saw the game I figured it would be really easy to make a difficult maze, but it is surprisingly difficult.  I really like the tile system, as it forces you to think carefully about where to lead your path instead of haphazardly throwing passages together.

A very enjoyable maze creation puzzle game. At first I didn't get that you were supposed to make the longest maze you can so I just created a very easy one that by far didn't reach the target score, but after I understood what to do I found that it's a really fun challenge to create a very hard maze.