It took a me a bit to understand how to get the player to spawn. I thought the purple solid tiles were just background paint so I painted them over the player spawn but that caused the player to be stuck. Also the first time hitting save and play the blue player box just spawns in the middle of the air with nothing. I had to make a course with tiles underneath the SP box and then save and exit to the level select and then hit save and play. Right click is used to edit the levels. I couldn't find any premade levels, not sure if that was intended or not.