Demolition Expert

Demolition Expert is a perk in Fallout 2, Fallout 3, Fallout: New Vegas, Fallout 4, Fallout 76, Fallout: The Roleplaying Game and Fallout Tactics.

Fallout 2 and Fallout Tactics


A single rank perk, granting a damage bonus when using explosives. It also negates the chance for timed explosives to detonate prematurely. The requirements to obtain this perk are the same in both games.

Fallout 3 and Fallout: New Vegas


The perk was expanded to three ranks, with each rank increasing the damage dealt with explosives by 20%, up to a maximum of 60%. In Fallout: New Vegas, the perk also affects weapons other than grenades and mines, which set the tone for future games.

Fallout 4


The perk received another rank, having four ranks in total, with each rank granting a 25% increase to damage dealt with explosives. In addition, each rank grants a minor bonus, such as an increased explosion radius. The perk is also required for crafting explosives and other items. Just like in Fallout: New Vegas, the perk is not limited to throwables like grenades or mines.

Fallout 76


A perk with five ranks, with the first one granting 20% increased damage with explosives, and subsequent ranks granting 10% each, for a maximum of 60%. The perk affects weapons in a similar way as it did in Fallout 4, covering almost all throwables, placeable mines, weapons categorized as explosive, as well as weapons with the Explosive legendary effect. Likewise, it also retained its importancy for crafting.

Fallout: The Roleplaying Game


When executing an attack using a weapon with the Blast quality, the attack gains the Vicious damage effect. In addition, the perk unlocks recipes for explosives having it as a requirement.