one 512*512 graphic page for sprites 512 sprites that can be shared between the two screens with XSCREEN XSCREEN [type],[sprites on upper screen],[bg layers on upper screen] so if the upper screen has 100 sprites, the lower has 412 thats without saying that keeping track of sprites is a nuisance, unless: VAR THE_SPRITE% = SPSET(0) assigning a sprite to a variable :o