Games like Gladia
Games like Gladia include Half Sword, Rise of the Ronin, Kingdom Come: Deliverance, Onimusha: Way of the Sword, and She Will Punish Them. We matched them by the tags players give Gladia on Steam (Action RPG, Swordplay, Rome, Action, and 3D): closest matches first, and among equally close ones the better-known games.

Half Sword
Shared: Swordplay · Physics · Realistic

Rise of the Ronin
Shared: Action RPG · Swordplay · Action

Kingdom Come: Deliverance
Shared: Realistic · Swordplay · Historical

Onimusha: Way of the Sword
Shared: Swordplay · Action · Action RPG

She Will Punish Them
Shared: Action RPG · 3D · Nudity

Black Myth: Wukong
Shared: Action RPG · Action · 3D

Bloody Spell
Shared: Action RPG · 3D · Action

LIZARDS MUST DIE
Shared: Historical · Action RPG · Spectacle fighter

Titan Quest II
Shared: Action RPG · Action · 3D

Fatekeeper
Shared: Action RPG · Action · 3D

Chivalry 2
Shared: Swordplay · Action · Historical

Blade and Sorcery
Shared: Swordplay · Action · Physics

Dragon's Dogma 2
Shared: Action RPG · Action · Swordplay

ATLYSS
Shared: Action RPG · Action · 3D

Chivalry: Medieval Warfare
Shared: Action · Swordplay · Indie

Kingdom Come: Deliverance II
Shared: Action · Realistic · Swordplay

SCUM
Shared: Survival · Action · Realistic

Ryse: Son of Rome
Shared: Action · Rome · Historical

DYNASTY WARRIORS: ORIGINS
Shared: Action RPG · Spectacle fighter · Swordplay

FINAL FANTASY XVI
Shared: Action RPG · Action · Spectacle fighter

Vanishing Realms™
Shared: Swordplay · Action RPG · 3D

CRISIS CORE –FINAL FANTASY VII– REUNION
Shared: Action · Action RPG · 3D

FINAL FANTASY VII REMAKE INTERGRADE
Shared: Action RPG · Action · Spectacle fighter

Carnal Instinct
Shared: Action RPG · 3D · Nudity

