Games like Operation Hardcore
Games like Operation Hardcore include SANABI, Celeste, Touhou Luna Nights, Warhammer 40,000: Shootas, Blood & Teef, and Cuphead. We matched them by the tags players give Operation Hardcore on Steam (Side Scroller, Shoot 'Em Up, 2D Platformer, Bullet Hell, and Difficult): closest matches first, and among equally close ones the better-known games.
SANABI
Shared: 2D Platformer · Action · Pixel Graphics
Celeste
Shared: Difficult · 2D Platformer · Platformer
Touhou Luna Nights
Shared: Side Scroller · Difficult · Bullet Hell
Warhammer 40,000: Shootas, Blood & Teef
Shared: Side Scroller · 2D Platformer · Shoot 'Em Up
Cuphead
Shared: Difficult · Platformer · Bullet Hell
Rise & Shine
Shared: Side Scroller · 2D Platformer · Bullet Hell
Enter the Gungeon
Shared: Bullet Hell · Difficult · Pixel Graphics
Super Meat Boy
Shared: 2D Platformer · Difficult · Platformer
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Difficult
Super Time Force Ultra
Shared: Side Scroller · 2D Platformer · Bullet Hell
Broforce
Shared: Platformer · Side Scroller · Action
Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · Difficult
Huntdown
Shared: Side Scroller · Shoot 'Em Up · Shooter
Blasphemous 2
Shared: Difficult · Side Scroller · 2D Platformer
Zombotron
Shared: Shoot 'Em Up · 2D · Side Scroller
Skul: The Hero Slayer
Shared: Action · Side Scroller · Platformer
Kero Blaster
Shared: Side Scroller · Shoot 'Em Up · Platformer
Pizza Tower
Shared: 2D Platformer · Platformer · Indie
Shovel Knight: Treasure Trove
Shared: Platformer · Side Scroller · Difficult
Intrusion 2
Shared: Platformer · Side Scroller · Shooter
Katana ZERO
Shared: 2D Platformer · Platformer · Action
Anomaly Agent
Shared: Side Scroller · 2D Platformer · Platformer
Geometry Dash
Shared: Difficult · Platformer · 2D
NINJA GAIDEN: Ragebound
Shared: 2D Platformer · Side Scroller · Platformer