Weapon is one element which killed Dr. Black. During the game, you make suggestions which must involve a suspect, weapon, room, for other players to answer. Only one out of six weapon is stored in envelop so the weapons you/others have are not in the envelop. To win the game, you need to find out which weapon is stored in the envelop before making an accusation, through deductions or other methods.
There are six main weapons that in nearly every game. 1 is stored in envelop and 5 are distributed randomly among players. To find out the weapon in envelop, you can go to a room you have, then ask a suspect you have and a weapon you don't have. Continue this until nobody can answer you, because the unanswerable weapon is in envelop.
Other weapons in variant games include:
- Garden Shears
- Water Bucket
- Tennis Racket
- Lawn Gnome