18x16 is 288 9x16 is 144 (I made a typo in my previous post - wrote 18, looking at your map size, rather than 16 which is the tile size. It's got to be the height or width x the tile size, so 16) However, do you have a screen resolution changer that will also change the game screen width/height? The default is 17x13 tiles, so if yours is only 9, you'll need to resize the game screen itself. The community basic plugin that is added to new projects by default should let you do that. Play around with those numbers a bit and make sure the game window is the right size. See how that goes. And you must be using another plugin for that overlay because the default parallax only does the background image. That image might also be the wrong size, but the plugin might also be incompatible with this one, so you might need a little fix there too.