The Hammer is an item in Pajama Sam in "No Need To Hide When It's Dark Outside".
Pajama Sam No Need To Hide When It's Dark OutsideEdit
In the Darkness' living room storyline, Sam will need to use the hammer and a nail from the mines in order to repair Chair after one of his legs break due to Sam attempting to get the blue potion for the invisiblity potion.
In the Secret Mines storyline, Sam will need to use the hammer to pry off the boards blocking off the way to the hidden mines. Sam manages to get one board off the entrance, but he doesn't use it on the other boards as they surrendered and left.