Pitfall - You can jump on the Alligators head but avoid his gnashers.
River Raid - To maximize your points, blow up the fuel tanks whilst
you are refueling.
Kaboom ! - Catching bombs in the top bucket is unecessary, usage of
the bottom two is adequate.
Fishing Derby - Hitting the SPACE BAR (FIRE) after you've hooked a
fish, will speed up the catch, thus helping you avoid
the sharks etc...