The projectile applies 10 ticks of immunity frames on the target it hits, and is possible to hit the same target for multiple times (e.g. The projectile deals 50% base damage (52.5 base damage), and strikes up to 3 times. The projectile will move relative to the player, staying on the same course on the screen as the player moves.

Each time the sword swings, a projectile resembling a spinning disc of energy will be fired. On the Desktop version, Console version, and Mobile version, the sword itself has a large aura of dark energy around the blade when swung, which significantly increases the range at which the weapon can deal damage to enemies, including coverage behind the player. On the Desktop, Console, Mobile, and 3DS versions, the True Night's Edge is capable of autoswing.

It is one of the ingredients necessary to craft the Terra Blade. The True Night's Edge is a Hardmode sword that is a stronger version of the Night's Edge, doing more damage and firing a projectile when swung.