Games like Rogue Knight
Games like Rogue Knight include Dead Cells, Skul: The Hero Slayer, Anomaly Agent, Hades, and Vampire Survivors. We matched them by the tags players give Rogue Knight on Steam (Action Roguelike, Action, Roguelike, Souls-like, and Side Scroller): closest matches first, and among equally close ones the better-known games.

Dead Cells
Shared: Roguelike · Action Roguelike · 2D

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

Anomaly Agent
Shared: Action Roguelike · Side Scroller · 2D Platformer

Hades
Shared: Action Roguelike · Action · Roguelite

Vampire Survivors
Shared: Action Roguelike · Roguelite · 2D

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Roguelike · Difficult

Rogue Legacy
Shared: Roguelike · Action Roguelike · Action

Dungreed
Shared: Action Roguelike · Roguelike · Action

Hades II
Shared: Action · Roguelike · Action Roguelike

Risk of Rain (2013)
Shared: Action Roguelike · Roguelike · Action

Noita
Shared: Roguelike · Action Roguelike · 2D

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Action

Death Must Die
Shared: Action Roguelike · Roguelite · Action

Blasphemous 2
Shared: Souls-like · Difficult · Side Scroller

Halls of Torment
Shared: Action Roguelike · Roguelike · Roguelite

Enter the Gungeon
Shared: Action Roguelike · Roguelike · Difficult

30XX
Shared: Action Roguelike · Side Scroller · Roguelike

Wizard of Legend
Shared: Action Roguelike · Roguelike · Action

Hollow Knight
Shared: Souls-like · 2D · Difficult

Lost Castle
Shared: Action Roguelike · Side Scroller · Roguelike

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

Spelunky
Shared: Action Roguelike · Roguelike · 2D

Megabonk
Shared: Action Roguelike · Roguelike · Roguelite

Caveblazers
Shared: Action Roguelike · Roguelike · Roguelite