Games like Salvage Op
Games like Salvage Op include Half-Life: Alyx, Black Mesa, Half-Life 2, Prey, and Dead Space (2008). We matched them by the tags players give Salvage Op on Steam (Action, Indie, Horror, Sci-fi, and Exploration): closest matches first, and among equally close ones the better-known games.

Half-Life: Alyx
Shared: VR · Horror · Action

Black Mesa
Shared: Action · Sci-fi · Singleplayer

Half-Life 2
Shared: Action · Sci-fi · Singleplayer

Prey
Shared: Sci-fi · Horror · Singleplayer

Dead Space (2008)
Shared: Action · Horror · Sci-fi

Aliens vs. Predator™
Shared: Action · Sci-fi · Horror

Bright Memory: Infinite
Shared: Action · Indie · Singleplayer

FIVE NIGHTS AT FREDDY'S: HELP WANTED
Shared: VR · Horror · Action

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · Action · VR

Lethal Company
Shared: Horror · Exploration · Sci-fi

Alien: Isolation
Shared: Horror · Sci-fi · Aliens

Crysis Remastered
Shared: Action · Sci-fi · Singleplayer

BONEWORKS
Shared: Action · VR · Singleplayer

Titanfall® 2
Shared: Action · Singleplayer · Sci-fi

Aliens: Colonial Marines Collection
Shared: Action · Sci-fi · Horror

SUPERHOT
Shared: Action · Indie · Singleplayer

Resident Evil 7 Biohazard
Shared: Horror · VR · Singleplayer

DOOM
Shared: Action · Sci-fi · Singleplayer

Cyberpunk 2077
Shared: Singleplayer · Sci-fi · Action

Resident Evil 4
Shared: Action · Horror · Singleplayer

Crysis 2 - Maximum Edition
Shared: Action · Sci-fi · Singleplayer

Resident Evil Village
Shared: Horror · Action · Singleplayer

GORN
Shared: Action · VR · Indie

Trepang2
Shared: Horror · Action · Singleplayer