Games like Fallen King [Hell Mode+Nightmare Mode+Death Mode]
Games like Fallen King [Hell Mode+Nightmare Mode+Death Mode] include Black Myth: Wukong, Hades II, Hades, Hero Siege, and Dead Cells. We matched them by the tags players give Fallen King [Hell Mode+Nightmare Mode+Death Mode] on Steam (RPG, Action, Action Roguelike, Spectacle fighter, and Hack and Slash): closest matches first, and among equally close ones the better-known games.

Black Myth: Wukong
Shared: Action · RPG · Souls-like

Hades II
Shared: Action · Hack and Slash · Action Roguelike

Hades
Shared: Action Roguelike · Hack and Slash · Action

Hero Siege
Shared: RPG · Action Roguelike · Hack and Slash

Dead Cells
Shared: Action Roguelike · Souls-like · Hack and Slash

God of War Ragnarök
Shared: Action · RPG · Hack and Slash

Stellar Blade™
Shared: Action · Hack and Slash · Souls-like

VOIN
Shared: Action · RPG · Action Roguelike

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Roguelike

Path of Exile 2
Shared: RPG · Hack and Slash · Action RPG

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

STAR WARS Jedi: Fallen Order™
Shared: Souls-like · Action · Action-Adventure

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

Anomaly Agent
Shared: Action Roguelike · Hack and Slash · Souls-like

BlazBlue Entropy Effect
Shared: Action Roguelike · Action · Platformer

Eastern Exorcist
Shared: RPG · Action · Hack and Slash

The First Berserker: Khazan
Shared: Souls-like · Hack and Slash · RPG

NieR:Automata™
Shared: RPG · Hack and Slash · Action

Onimusha: Way of the Sword
Shared: Action · Souls-like · Hack and Slash

God of War
Shared: Action · RPG · Hack and Slash

Heroes of Hammerwatch II
Shared: RPG · Action Roguelike · Action

Rogue Legacy
Shared: Action Roguelike · Action · Platformer

FINAL FANTASY VII REBIRTH
Shared: RPG · Action · Spectacle fighter

Darksiders III
Shared: Action · Hack and Slash · RPG