Hi Erel, I have just purchased basic4ppc, up to this point I have been a GLBasic person as it can compile for multiple Operating Systems. I have been trying to get my head around Sprites and Transparency in basic4ppc as they are used in a different way! GLBasic: LOADSPRITE "ship.bmp",0 LOADSPRITE "shot.bmp",1 LOADSPRITE "buga.bmp",2 LOADSPRITE "boom.bmp",3 The sprite's are referred to numerically or given names. // Player INC playerx, MOUSEAXIS(0) playerx = MAX(MIN(playerx,600),32) SPRITE 0, playerx, 456 //sets the ship.bmp position SHOWSCREEN The ship.bmp has a background colour of RGB(255,0,128) which is transparent the sprites in basci4ppc also have transparency bur an image does no seem to have thia capabillity, the image button is no use for this either as its transparency is the same as the Form or Panel background colour? // Invaders TYPE FOE x y speed = 3 amour = 4 ENDTYPE LOCAL bugs AS FOE FOREACH bug IN bugs / draw the invaders on the screen and animate INC bug.x, bug.speed IF bug.x<0 OR bug.x>640 bug.speed = - bug.speed INC bug.y, 32 ENDIF NEXT How would I handle all this in basic4ppc, I will end up with six rows of invaders, each row will have a score value, top will have the highest score so I need to know which sprite has been destroyed. Can I put the sprites in a structure or an Array? I am not asking you to do the programming for me but I would like more info on how to controll the sprites within the game. Regards, Andrew.