Dr. Mario
Sent in by David Perry
When you beat Level 20 at High speed, it starts off with the usual
"Congratulations..." message and the 3 viruses sitting on the
tree. But the sky gradually gets darker, finally with everything going
dark. You can only see the silhouettes of the tree and virii. Then a space
ship appears from the left, hovers over the tree, and beams the virii up
and flies away! Stars shower down around. When you press Start to
keep playing you end up on level 21, which is just level 20 again. You
can go up to level 24, after which you just keep playing level 24 over again.