BSD. i hate it, but it keeps me coming back for more. took several years to really appreciate. once you get a few games of stacked mulitballs...wow! still not my favorite game, but enjoy it much more now then when i first started playing it. just have to view it as a challenge game and not so much as a 'fun' game, like funhouse. also, if the flippers are weak, it's horrible to get anywhere on it.