Hola amigos one last question and i wont badder you for a while hopefully i need to know 4 things to make a game, 1 sprites, 2 variables, 3 animation and 4 and most imortant collision detection: in enchant is and very efficient: sprite1.intersect(sprite2); alert("collision"); or sprite1.within(sprite2); alert("collision'); I am sure theres something like it here. in the example file for sprites they all are reference as sprite and then put properties with "this" i dont see an identifier for each thanks a lot for the help and insight