Little demo project arising from discussion topic here: http://scratch.mit.edu/discuss/topic/4056/ The source of the 'wormhole' follows the pointer. Uses clones to draw the growing circles, and a ghosted black rectangle is stamped to produce a tunnel translucency effect, as an excuse for why you can see distant parts of the tunnel around bends. Enjoy! :) -And feel free to remix & make something even better out of it!