One difference between the silver version and the wide screen version is that the silver version only scores a point when a man is helped to the ambulance. The wide screen version gives a score every time a man is helped on the trampoline.
Interesting, that is the first time there's been an actual code difference between revisions I believe?
Was it ever confirmed that Egg and Mickey Mouse are identical http://www.intheattic.co.uk/egg.htm claims that Egg is 'harder to play' although there's nothing really to back that claim up.