smashio use spdef to define the frames of mario. Then, use SPANIM to animate the sprite: Example SPDEF: VAR I,N=4 FOR I=0 TO N-1 SPDEF I,0+I*16,0,16,16,0,0,1 SPDEF N+I,0+I*16,0,16,16,0,0,1+8 NEXT ...