READ ALL THE INSTRUCTIONS BEFORE REMIXING WASD to move Arrow keys to look around. The FOV slider is to zoom in and out, the resolution slider is backwards, thanks to a tutorial. The reason why it is called 3d Maze Maker is because you can remix and edit the level sprite, it will become your own maze and save you a few hours coding. Make sure you keep the outer walls on the level. The set pen color on the when i receive raycast on the raycaster sprite is to change the color of the walls. the backdrop is to change the color of the floor and ceiling. There is one pre made maze, you can edit the one I made or make your own. It is a lot harder than it looks, by the way. The room with the Blue is the room that you start in.
I used griffpatch's tutorials to make the game. If it is lagging, It is good to know that is very laggy on some devices. Some ways to fix this is to put the RES slider to a higher number or make sure your device is fully charged.