How can I add a kind of popping, wooho or something like that animation on Game over screen when some one makes their new high score??
I don't think this is possibly, as it is currently impossible to compare session points to best points... You could however spring a different end-level UI (and therefore animation, sound, etc.) based on milestone scores... at 1, 2, 3, 4, 5k points, for instance... different levels of celebration occur. The player would see these celebrations each time, though. (Not what you asked for, but see here for what I've mentioned)
@Nanotaku Thanks.. I think they should really add some useful features like these in the next update.. For a whooping 2k per year they should really constantly update with new features..!