Nerf

A nerf is a term used to describe the weakening of a character (or aspect of a character), either through updating a game or by releasing a sequel. It is often done as an attempt to balance the roster. The best example of this is Kirby's transition from the original Super Smash Bros. to Super Smash Bros. Melee; Kirby went from being among the best characters according to the Smash 64 tier list to among the worst according to Melee's. The opposite term is "buff", which is the strengthening of a character between sequel games.

The term "nerf" is derived from the brand of toy known for its soft foam-like substance. This substance allows for safer play, as little chance of injury comes from impact with such items. In effect, a projectile is less damaging because it was "nerfed".