Helmet is played with a worker in the door of a building under construction on the far left, who must run to the office on the far right while avoiding tools falling from above. The office door opens and closes automatically and cannot be entered while the door is closed. If the worker is hit by a tool, the player loses a life, with the game ending after the player loses three lives. In GAME B, the tools fall faster and in larger numbers, making them much harder to avoid.