A serious bug was reported that the game freezing. This is due to the game maker's recent update It was also my problem. I didn't put the environmental elements in the grid for a couple of reasons This made the difference between ponchoman and creature where they could go. It's easy to understand when you think of chess. ponchoman moves freely, but creature moves in a compartment separated by 12x8 pixels. If one environmental elements exist halfway across two spaces ponchoman can go, but creature can't. This led to an infinite loop of the path algorithm Eventually, game freezing. In order to fix this problem, the collision of environmental elements generally revised and some of them have been re-made. The map has also changed slightly.