Hi GBebbe, Molecule drawing code and logic code is currently separated; Scenes has been implemented from the beginning but I fear to add complexity to the framework and final user. I am a bit obsessed right now, to keep framework simple for final user, usable and very friendly. I am agree with you, for the point of view of advance programmer, that scenes help to keep the code clean (after all, you can create different scenes for menu, game or stages inside game, but I fear that for the novice programmer or fast development is not enough useful to justify). I am not sure to release the scenes on the framework yet. Thanks for experience / opinion. Regards,