The concept of a "giant sword" and its associated damage output depends on the specific fictional universe, video game, or work of fiction in which it is depicted. In various fictional settings, the damage inflicted by a giant sword can vary widely depending on factors such as the sword's size, weight, composition, the strength of the wielder, and the rules or mechanics of the fictional world.

It's important to note that giant swords are often portrayed as exaggerated or fantastical weapons designed for dramatic effect in fictional scenarios. They are not representative of real-world weaponry or combat.

In video games, the damage output of a giant sword is typically determined by the game's mechanics, character attributes, and combat system. The damage may be influenced by the player's character stats, weapon enhancements, special abilities, or specific gameplay mechanics. Different games may assign varying damage values or effects to giant swords based on their balance and intended role within the game's mechanics.

Ultimately, the damage potential of a giant sword is a fictional concept that is subject to the rules and conventions of the particular fictional universe or game in which it is featured.