I just had a thought. These worms are not traveling around a Cartesian Plane. Cartesian plane's don't loop top/bottom and left/right like that. What these snakes are traveling on is a torus (donut). You should change the title.
This is truly one of the most original game concepts I've ever seen. The combination of puzzle varieties (maze and tile puzzle), the beautifully interweaving music, the mixture of difficulties and creative uses of its own mechanics made for a wonderful game. 5/5
 "Socrates Jones: Pro Philosopher"){kind=icon}
 "Snakes On A Cartesian Plane"){kind=icon}
 "Continuity"){kind=icon}
 "ClueSweeper"){kind=icon}
 "Pwong 2"){kind=icon}