Zeppelin - Commodore 64

Zeppelin is an arcade game where you have to fly with an airship through a cave system. There you have to avoid hostile zeppelins or shoot them. Other creatures block the way and touching the walls is deadly. Keys need to be picked up and keyholes need to be touched with them to open further caves. Defensive fortifications can be switched off by shooting at the switches. To make the game even more interesting, earthquakes are released randomly. This makes it a bit more difficult not to collide with the walls.