Probably the most privmitve weapon used. A stone held in the hand makes the blow stronger, and you can extend your reach by throwing it. As it is easy to find a rock of any size, it can be truly frightening in the hands of huge creatures that normally have a very hard time finding more sophisticated weapons.
Great Blow
A Great Blow is a powerful all-out attack. It always requires two hands, even with a weapon that is normally used one-handed. It receives a +3 bonus to your damage, but you cannot do anything, such as an ActiveDefense, until your next shot comes up.
Great Blow does not combine with Bash.
Improvised
This weapon does not need to be made as a dedicated weapon - it can be found or scrounged from civilian gear. Such scrounged versions are less durable than the real thing, and break on any snakeyes roll. In addition, any Disarm Stunts get a +3 modifier against such a weapon.
Of course, a purposedly crafted version of the weapon does not have these drawbacks.
Throw
Your weapon can be thrown, with short Range.
Drawing and throwing is a single action; you don't need to spend time drawing a weapon you are about to throw.
You cannot combine Throw and Impale.