yeah here SPCOL Before using any of these commands, you must enable collision detection using SPCOL. SPCOL ID If you want collision detection to work on SPSCALED sprites, you must do SPCOL ID,TRUE 'BEFORE using SPSCALE You can also set a collision mask: SPCOL ID,TRUE,Mask Sprites will only collide if their masks have some of the same bits set. &B100 will collide with &B111 but not &B001.