"It's white with no number on it. That means it's the cue ball."
One of four items needed to escape the Building World
Beneath elevators in the Building World
Silent Hill 4: The Room
The Billiard Ball is an item found in Silent Hill 4: The Room and is part of the Four Reminiscences Puzzle. In order to escape his second venture in the Building World, Henry Townshend must collect four key items and place them in their respective areas. The billiard ball is one of these four items, and it can be found in the chamber beneath the pair of elevators. The cue ball belongs on the billiard table in Bar Southfield and must be placed there before Henry can proceed to the next world.