Extra point (Biplanes): Although the game is supposed to end when a player
scores fifteen points, any shots already in air at that time will
still count if they hit their target. This allows a player to
actually win with sixteen points.
Shoot through the tower (Biplanes): Note the narrow spot on the upper half of the tower.
Shooting at that location horizontally will sometimes result in
the bullets passing directly through the tower.
