## Description
_Ceiling Zero_ is a fixed screen shoot ’em up. It features an alien
mothership that is protected by the titular ceiling, a power field that the
player can’t shoot through. The mothership throws various objects onto the
screen that will bounce around until the player has shot them all down or he
is killed when colliding with them. Once all the objects have been destroyed
the ceiling moves down one step and another wave is released. The player’s
goal is to survive until the ceiling has reached the floor. There are three
different kinds of objects and they differ, not only in appearance, but in
their speed and how they move. In addition to these there is also occasionally
a creature that attempts to land. If it succeeds before the player shoots it
down, a life is lost no matter how far from the player it is. Similar to other
early shooters the player is restricted to move left and right.
Ceiling Zero