in 1988 Dangerous Dave you can access bonus levels if you find a way to fall on the left or right side of certain levels. The way you win a level if by reaching the door after grabbing the cup, if you haven't grabbed the cup you just go through the door. On level 6 the door is at the ceiling and if you go through it without the cup you can access the "bonus area" but because no such bonus area exists the game just breaks.
in 1988 Dangerous Dave you can access bonus levels if you find a way to fall on the left or right side of certain levels. The way you win a level if by reaching the door after grabbing the cup, if you haven't grabbed the cup you just go through the door. On level 6 the door is at the ceiling and if you go through it without the cup you can access the "bonus area" but because no such bonus area exists the game just breaks.