Games like Reframed
Games like Reframed include DOOM, DOOM Eternal, Devil Daggers, Blood and Bacon, and Trepang2. We matched them by the tags players give Reframed on Steam (Action, Indie, FPS, Gore, and Horror): closest matches first, and among equally close ones the better-known games.

DOOM
Shared: Action · FPS · Gore

DOOM Eternal
Shared: Action · FPS · Gore

Devil Daggers
Shared: FPS · Indie · Action

Blood and Bacon
Shared: Gore · Action · FPS

Trepang2
Shared: FPS · Action · Gore

Left 4 Dead 2
Shared: FPS · Action · Horror

GTFO
Shared: FPS · Horror · Action

ULTRAKILL
Shared: FPS · Gore · Indie

SUPERHOT
Shared: Action · FPS · Indie

Serious Sam 3: BFE
Shared: Action · FPS · Gore

Bright Memory: Infinite
Shared: Action · FPS · Indie

Hotline Miami
Shared: Action · Indie · Gore

CARRION
Shared: Gore · Action · Indie

Ready or Not
Shared: FPS · Horror · Action

Serious Sam Fusion 2017 (beta)
Shared: Action · FPS · Gore

Counter-Strike 2
Shared: FPS · Action · Difficult

Serious Sam 4
Shared: Action · Gore · FPS

Nightmare of Decay
Shared: Action · Horror · FPS

Resident Evil Village
Shared: Action · Horror · Gore

Hotline Miami 2: Wrong Number
Shared: Gore · Action · Difficult

Aliens vs. Predator™
Shared: Action · FPS · Horror

Killing Floor 2
Shared: Gore · FPS · Action

F.E.A.R.
Shared: Action · FPS · Horror

Killing Floor
Shared: FPS · Action · Horror