Games like Serious Sam II
Games like Serious Sam II include Counter-Strike 2, Left 4 Dead 2, Borderlands 2, Call of Duty®: Black Ops III, and Serious Sam 3: BFE. We matched them by the tags players give Serious Sam II on Steam (Action, FPS, Comedy, Multiplayer, and Shooter): closest matches first, and among equally close ones the better-known games.

Counter-Strike 2
Shared: FPS · Action · Multiplayer

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

Borderlands 2
Shared: Action · Co-op · Shooter

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

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

Call of Duty®
Shared: FPS · Action · Multiplayer

DOOM
Shared: FPS · Action · Shooter

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

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

Team Fortress 2
Shared: FPS · Action · Multiplayer

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

Blood and Bacon
Shared: Action · Multiplayer · FPS

PAYDAY 2
Shared: Action · Co-op · FPS

PUBG: BATTLEGROUNDS
Shared: FPS · Shooter · Multiplayer

Apex Legends™
Shared: FPS · Multiplayer · Action

Halo Infinite
Shared: FPS · Multiplayer · Action

Ready or Not
Shared: FPS · Multiplayer · Shooter

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

Grand Theft Auto V Legacy
Shared: Action · Multiplayer · First-Person

Half-Life 2
Shared: Action · FPS · Shooter

Far Cry 3
Shared: FPS · Action · Multiplayer

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

Half-Life
Shared: FPS · Action · Multiplayer

DOOM Eternal
Shared: FPS · Action · Gore