Games like Sword Duel
Games like Sword Duel include Hellish Quart, Half Sword, METAL GEAR RISING: REVENGEANCE, Sifu, and Goat Simulator. We matched them by the tags players give Sword Duel on Steam (Simulation, Swordplay, 3D Fighter, Physics, and Spectacle fighter): closest matches first, and among equally close ones the better-known games.

Hellish Quart
Shared: 3D Fighter · Swordplay · Hack and Slash

Half Sword
Shared: Physics · Swordplay · Simulation

METAL GEAR RISING: REVENGEANCE
Shared: Swordplay · Hack and Slash · Spectacle fighter

Sifu
Shared: Action · Martial Arts · Souls-like

Goat Simulator
Shared: Simulation · Physics · Action

Onimusha: Way of the Sword
Shared: Swordplay · Action · Souls-like

LIZARDS MUST DIE
Shared: Spectacle fighter · Hack and Slash · Souls-like

DYNASTY WARRIORS: ORIGINS
Shared: Hack and Slash · Spectacle fighter · Martial Arts

Dead as Disco
Shared: Spectacle fighter · Hack and Slash · Action

DRAGON BALL: Sparking! ZERO
Shared: 3D Fighter · Action · Physics

Devil May Cry 5
Shared: Hack and Slash · Action · Spectacle fighter

Clone Drone in the Danger Zone
Shared: 3D Fighter · Swordplay · Action

We Who Are About To Die
Shared: Simulation · Action · Physics

STAR WARS Jedi: Fallen Order™
Shared: Swordplay · Souls-like · Third Person

Totally Accurate Battle Simulator
Shared: Simulation · Physics · 3D

Undisputed
Shared: 3D Fighter · 3D · Third Person

Chivalry 2
Shared: Swordplay · Hack and Slash · Action

Blade and Sorcery
Shared: Swordplay · Physics · Action

STAR WARS Jedi: Survivor™
Shared: Action · Souls-like · Swordplay

NINJA GAIDEN 2 Black
Shared: Hack and Slash · Action · Swordplay

BeamNG.drive
Shared: Simulation · Physics · Third Person

DmC: Devil May Cry
Shared: Hack and Slash · Action · Spectacle fighter

FOR HONOR™
Shared: Swordplay · Action · Third Person

Nuclear Option
Shared: Simulation · Physics · Action