Maybe people who play a level can press a certain button to screenshot that part of the level so that get's assigned as the thumbnail, or there could be a picture taken at a random point. This way you don't have to manually add the thumbnails yourself.
Maybe people who play a level can press a certain button to screenshot that part of the level so that get's assigned as the thumbnail, or there could be a picture taken at a random point. This way you don't have to manually add the thumbnails yourself.