Games like Zombie Siege：Room War
Games like Zombie Siege：Room War include Escape From Duckov, Borderlands 2, s&box, ZERO Sievert, and Left 4 Dead 2. We matched them by the tags players give Zombie Siege：Room War on Steam (Action, Shooter, Top-Down Shooter, 3D Platformer, and Looter Shooter): closest matches first, and among equally close ones the better-known games.
Escape From Duckov
Shared: Action · Top-Down Shooter · Shooter
Borderlands 2
Shared: Shooter · Action · Looter Shooter
s&box
Shared: Action · Shooter · 3D Platformer
ZERO Sievert
Shared: Looter Shooter · Shooter · Action
Left 4 Dead 2
Shared: Shooter · Action · Zombies
PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Survival
The Last Stand: Aftermath
Shared: Top-Down Shooter · Shooter · Zombies
Zombieville USA 3D
Shared: Action · Top-Down Shooter · Shooter
PAYDAY 2
Shared: Action · Looter Shooter · Shooter
Halo: Spartan Assault
Shared: Action · Top-Down Shooter · Shooter
Risk of Rain 2
Shared: Action · Looter Shooter · Shooter
Cluckmech Oasis
Shared: Top-Down Shooter · Action · Shooter
HELLDIVERS™ Dive Harder Edition
Shared: Top-Down Shooter · Action · Shooter
RUNNING WITH RIFLES
Shared: Action · Top-Down Shooter · Top-Down
Call of Duty®: Black Ops III
Shared: Shooter · Action · Zombies
OUTRIDERS
Shared: Action · Looter Shooter · Shooter
Tom Clancy’s The Division™
Shared: Action · Looter Shooter · Shooter
12 is Better Than 6
Shared: Action · Shooter · Top-Down Shooter
Borderlands 3
Shared: Looter Shooter · Action · Shooter
The Ascent
Shared: Top-Down Shooter · Action · Shooter
Alien Shooter
Shared: Shooter · Action · Top-Down
My Friend Pedro
Shared: Action · Shooter · Indie
Relic Hunters Zero: Remix
Shared: Action · Looter Shooter · Top-Down Shooter
SYNTHETIK: Legion Rising
Shared: Top-Down Shooter · Action · Shooter