Hi, what are you changing and where? You will need to change the tk2dTileMap object, not the tile map data object. You probably don't want to do this if you had colliders on the tile map as that would be quite expensive. If you just need to go "in reverse" remember that you can also rotate your camera so its looking from the other direction. i.e. positioned in +z and rotated 180 deg. Not sure if that'll do what you need to, but its much much cheaper.