Games like Outbreak Squad
Games like Outbreak Squad include Days Gone, The Last of Us™ Part I, The Last Stand: Aftermath, DayZ, and Left 4 Dead 2. We matched them by the tags players give Outbreak Squad on Steam (Post-apocalyptic, Zombies, Survival, Action, and Adventure): closest matches first, and among equally close ones the better-known games.

Days Gone
Shared: Zombies · Post-apocalyptic · Survival

The Last of Us™ Part I
Shared: Post-apocalyptic · Zombies · Singleplayer

The Last Stand: Aftermath
Shared: Zombies · Post-apocalyptic · Survival

DayZ
Shared: Survival · Zombies · Post-apocalyptic

Left 4 Dead 2
Shared: Zombies · Action · Survival

Rise of the Tomb Raider™
Shared: Action · Adventure · Singleplayer

SurrounDead
Shared: Zombies · Survival · Post-apocalyptic

Resident Evil 4
Shared: Action · Zombies · Singleplayer

Resident Evil 4 (2005)
Shared: Zombies · Action · Singleplayer

Fallout 4
Shared: Post-apocalyptic · Singleplayer · Adventure

PUBG: BATTLEGROUNDS
Shared: Survival · Shooter · Action

Resident Evil Requiem
Shared: Zombies · Action · Singleplayer

Tomb Raider Game of the Year
Shared: Action · Adventure · Singleplayer

DeadPoly
Shared: Zombies · Survival · Post-apocalyptic

Metro Exodus
Shared: Post-apocalyptic · Singleplayer · Action

Escape From Duckov
Shared: Action · Adventure · Survival

Deadlight
Shared: Zombies · Post-apocalyptic · Action

The Final Station
Shared: Post-apocalyptic · Survival · Zombies

Left 4 Dead
Shared: Zombies · Action · Survival

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Post-apocalyptic · Survival · Singleplayer

7 Days to Die
Shared: Zombies · Survival · Post-apocalyptic

The Walking Dead: A New Frontier
Shared: Zombies · Post-apocalyptic · Adventure

METRO Last Light Redux
Shared: Post-apocalyptic · Action · Singleplayer

Grand Theft Auto V Legacy
Shared: Action · Adventure · Shooter