Thanks for your reply. So in order to get it to work immediately when the game starts it has to be named default, ok got it. It looks like i will have to make some duplicates and change up the speed of the animation and alter the animation itself so they ALL aren't animating in sync which as far as hot lava bubbling would look wrong. Would it be an idea perhaps if there was a 'random speed: loop' and set max speed you want the random selector to go up to? like you could enter a range at which the random selector will use 1-8, and each loop for each tile might differ to animation speed. This could help make them not animate in unison for a start and of course the user/creastor would need to have different variants of that tile to make it less obvious too and more visually random.