Extra point (Biplanes)
The game is
supposed to end after the player scores 15 points, however, any shots already
in the air at that time will still count if they hit their target, allowing the
player to win with 16 points.
Shoot through the tower (Biplanes)
To make yout
bullets pass through the tower, shoot at the narrow spot on the upper half of
the tower. It may take a few tries to get it right.
