Games like Knight Terrors
Games like Knight Terrors include Broforce, Skul: The Hero Slayer, UFO 50, Hotline Miami, and Shovel Knight: Treasure Trove. We matched them by the tags players give Knight Terrors on Steam (Action, Indie, Runner, 2D, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Broforce
Shared: Action · Pixel Graphics · 2D

Skul: The Hero Slayer
Shared: Action · Indie · Pixel Graphics

UFO 50
Shared: Indie · Action · Pixel Graphics

Hotline Miami
Shared: Action · Indie · Pixel Graphics

Shovel Knight: Treasure Trove
Shared: Indie · Pixel Graphics · Retro

SANABI
Shared: Action · Pixel Graphics · Indie

Katana ZERO
Shared: Action · Pixel Graphics · Indie

Vampire Survivors
Shared: Pixel Graphics · Indie · 2D

Hotline Miami 2: Wrong Number
Shared: Action · Pixel Graphics · Indie

The Messenger
Shared: Retro · Pixel Graphics · 2D

Gato Roboto
Shared: Indie · Action · Pixel Graphics

Duck Game
Shared: Action · Pixel Graphics · 2D

Axiom Verge
Shared: Indie · Action · Pixel Graphics

Bloodstained: Curse of the Moon
Shared: Action · Pixel Graphics · 2D

Out There Somewhere
Shared: Indie · Pixel Graphics · 2D

Gravity Circuit
Shared: Action · Indie · 2D

Dino Run DX
Shared: Indie · Action · Pixel Graphics

LUFTRAUSERS
Shared: Indie · Action · Pixel Graphics

BlazBlue Entropy Effect
Shared: Action · 2D · Pixel Graphics

Super Meat Boy
Shared: Indie · Pixel Graphics · 2D

CARRION
Shared: Action · Pixel Graphics · Indie

Jump King
Shared: Indie · Pixel Graphics · Action

Streets of Rage 4
Shared: Action · Indie · 2D

Dungeon Munchies
Shared: Action · Indie · Pixel Graphics