How do I apply a filter?

Do all of the sprites need to get blurry at the same time, or one by one?

If they're blurring together at the same time, it might be best to put them all on a layer together and apply 1 blur effect to the whole layer (saves you a lot of time, and much more GPU friendly).

mikehive Well I need all of them to be blurry at once, but they are on different layers because of gameplay reasons.