<READ INSTRUCTIONS IF YOU WANT TO ENJOY THIS GAME> WASD to move. The left variable shows the amount of mazes completed. The right variable shows the global high score. To change difficulty, set TILE SIZE variable from a value from 11 to 50 (11 being hard and 50 being easy). You can technically get the high score by doing easy mazes, but that isn't really that fun and anyone could do that. Enjoy!
Thanks @griffpatch for the YouTube tutorial.