Games like Requiem: Avenging Angel
Games like Requiem: Avenging Angel include Half-Life, DOOM + DOOM II, Half-Life 2, DOOM 64, and DOOM. We matched them by the tags players give Requiem: Avenging Angel on Steam (Action, FPS, First-Person, Shooter, and Classic): closest matches first, and among equally close ones the better-known games.

Half-Life
Shared: FPS · Classic · 1990's

DOOM + DOOM II
Shared: FPS · Action · Classic

Half-Life 2
Shared: Action · FPS · Classic

DOOM 64
Shared: Action · FPS · Classic

DOOM
Shared: FPS · Action · Shooter

Half-Life: Opposing Force
Shared: Action · FPS · Classic

Black Mesa
Shared: FPS · Action · First-Person

DOOM Eternal
Shared: FPS · Action · Shooter

Quake
Shared: FPS · Action · Classic

Counter-Strike
Shared: Action · FPS · Shooter

Quake II
Shared: FPS · Action · Classic

Half-Life: Blue Shift
Shared: Action · FPS · Shooter

Warhammer 40,000: Boltgun
Shared: FPS · Action · Shooter

Call of Duty®
Shared: FPS · Action · Shooter

BioShock Infinite
Shared: Action · First-Person · FPS

Duke Nukem 3D: 20th Anniversary World Tour
Shared: FPS · Action · Classic

Halo: The Master Chief Collection
Shared: FPS · Classic · First-Person

Titanfall® 2
Shared: FPS · Shooter · Action

DOOM: The Dark Ages
Shared: Action · FPS · First-Person

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Shooter · Classic

DOOM 3
Shared: FPS · Action · Shooter

Halo Infinite
Shared: FPS · Action · Shooter

DUSK
Shared: FPS · Shooter · Retro

Counter-Strike: Condition Zero
Shared: Action · FPS · Shooter