Games like Serious Sam HD: The Second Encounter
Games like Serious Sam HD: The Second Encounter include Left 4 Dead 2, Serious Sam 3: BFE, Halo: The Master Chief Collection, Serious Sam HD: The First Encounter, and DOOM. We matched them by the tags players give Serious Sam HD: The Second Encounter on Steam (FPS, Action, Shooter, Comedy, and Multiplayer): closest matches first, and among equally close ones the better-known games.

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

Serious Sam 3: BFE
Shared: FPS · Action · Co-op

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

Serious Sam HD: The First Encounter
Shared: FPS · Action · Co-op

DOOM
Shared: FPS · Action · Shooter

Call of Duty®
Shared: FPS · Shooter · Action

PAYDAY 2
Shared: Action · FPS · Co-op

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

Borderlands 2
Shared: Action · Shooter · Co-op

Serious Sam 4
Shared: Action · FPS · Co-op

Black Mesa
Shared: FPS · Action · Shooter

PUBG: BATTLEGROUNDS
Shared: Shooter · FPS · Multiplayer

HELLDIVERS™ 2
Shared: Action · Shooter · Multiplayer

Blood and Bacon
Shared: Action · FPS · Shooter

Ready or Not
Shared: FPS · Shooter · Co-op

Half-Life
Shared: FPS · Action · Classic

Halo Infinite
Shared: FPS · Action · Multiplayer

Serious Sam II
Shared: FPS · Action · Co-op

Back 4 Blood
Shared: FPS · Multiplayer · Shooter

Borderlands: The Pre-Sequel
Shared: FPS · Co-op · Action

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

Serious Sam Classic: The First Encounter
Shared: FPS · Action · Shooter

How to Fish
Shared: Co-op · Multiplayer · Shooter

DOOM Eternal
Shared: FPS · Action · Gore