Demon Attack
On some/most/all? copies of the game, the game will "shut off" after
wave 84 is completed. (games 5-8 begin on wave 13 so it "appears" to
stop after 72)
Fry until game starts. The guys won't fire at you (well, they CAN'T)
you can move normally except after moving for about 10 seconds you
have to take a 10 second break. (your ship changes colors) also
guided missile is on.. [I haven't tried it yet but I think it's in
the "alternating-player" selection (the last game option) ed.]
Keep shooting the middle demon until only the top & bottom ones
remain. Now shoot the bottom one and go get something to drink,
the remaining demon (at the top) won't drop down.