The camera was making that strange pixel glitching effect. You can fix it on the properties. Anyway I could love to use the bats to fly around !
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Unfortunately I think this one was caused by a different thing, I'm using a textured image as the background, and sometimes it glitches when I move it. I suspect it would get fixed by snapping the movements to tile boundaries, but not totally sure. Anyway I'm glad you enjoyed using the bats to fly around.