When all in-game lives are expended, a cutscene depicts a cow in a spaceship, flying across the screen, towing a banner that says, "In space, no one can hear you moo."

Quests include erasing or revealing paintings by navigating the spaceship over the canvas; knocking pool balls into the exit opening; breaking wine glasses and other fragile objects against the edge of the screen;[3] or simply defeating all the enemies on a given level.

Occasionally, a bonus round tasks the player with collecting as many items as possible, before escaping through the exit opening, while avoiding being crushed by two walls converging from either side of the screen.

As the player progresses, the enemies, portrayed as simple, pixelated sprites, become faster and develop the ability to shoot various projectiles.

Computer Gaming World in March 1994 stated that Crystal Crazy "shows how to do a sequel right" and "just as fun" as "its hallowed predecessor".