Games like Halo: Campaign Evolved
Games like Halo: Campaign Evolved include Black Mesa, Half-Life 2, Halo Infinite, Halo: The Master Chief Collection, and Call of Duty®. We matched them by the tags players give Halo: Campaign Evolved on Steam (FPS, Action, Singleplayer, Sci-fi, and Shooter): closest matches first, and among equally close ones the better-known games.

Black Mesa
Shared: FPS · Action · Sci-fi

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

Halo Infinite
Shared: FPS · Singleplayer · Action

Halo: The Master Chief Collection
Shared: FPS · Co-op · Sci-fi

Call of Duty®
Shared: FPS · Action · Singleplayer

BioShock Infinite
Shared: Action · FPS · Shooter

Call of Duty®: Black Ops III
Shared: FPS · Action · Shooter

STAR WARS™ Battlefront™ II
Shared: Singleplayer · Shooter · Action

Half-Life
Shared: FPS · Singleplayer · Sci-fi

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

DOOM
Shared: FPS · Action · Shooter

RoboCop: Rogue City
Shared: FPS · Action · Singleplayer

Far Cry 3
Shared: FPS · Action · Co-op

Far Cry® 4
Shared: Action · FPS · Co-op

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

Titanfall® 2
Shared: FPS · Singleplayer · Action

Ready or Not
Shared: FPS · Singleplayer · Shooter

DOOM Eternal
Shared: FPS · Action · Shooter

Half-Life: Alyx
Shared: FPS · Singleplayer · Action

Left 4 Dead 2
Shared: FPS · Co-op · Action

Aliens: Colonial Marines Collection
Shared: FPS · Action · Co-op

Space Hulk: Deathwing - Enhanced Edition
Shared: Action · FPS · Co-op

Battlefield™ 2042
Shared: FPS · Singleplayer · Shooter

Call of Duty®: Modern Warfare® 2 (2009)
Shared: FPS · Action · Singleplayer