Games like Knight Story
Games like Knight Story include Rogue Legacy 2, Hades II, Minecraft Dungeons II, Minecraft Dungeons, and Wolcen: Lords of Mayhem. We matched them by the tags players give Knight Story on Steam (Action, Adventure, Casual, RPG, and Simulation): closest matches first, and among equally close ones the better-known games.

Rogue Legacy 2
Shared: Action · Adventure · Arcade

Hades II
Shared: Action · RPG · Roguelike

Minecraft Dungeons II
Shared: Action · Adventure · RPG

Minecraft Dungeons
Shared: Adventure · Action · RPG

Wolcen: Lords of Mayhem
Shared: Action · Action RPG · RPG

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

Last Epoch
Shared: RPG · Action RPG · Action

Vampire Survivors
Shared: Casual · Action · Bullet Hell

Dust: An Elysian Tail
Shared: Action · Adventure · RPG

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

Path of Exile 2
Shared: RPG · Action RPG · Action

Cat Quest
Shared: Adventure · RPG · Action

Hero Siege
Shared: Action RPG · RPG · Action

FATE
Shared: Action · RPG · Adventure

Dead Cells
Shared: Adventure · Roguelike · Action

Halls of Torment
Shared: Action · RPG · Action RPG

The Incredible Adventures of Van Helsing
Shared: Action · RPG · Adventure

Death Must Die
Shared: RPG · Action · Bullet Hell

Torchlight II
Shared: RPG · Action RPG · Action

God of War Ragnarök
Shared: Action · Adventure · RPG

Hades
Shared: Action · Roguelike · RPG

Diablo® IV
Shared: Action RPG · RPG · Action

鬼谷八荒 Tale of Immortal
Shared: Simulation · RPG · Action

Rogue Legacy
Shared: Action · Platformer · Roguelike