Games like PEAK.53
Games like PEAK.53 include PUBG: BATTLEGROUNDS, WARDOGS, Squad, Arma 3, and BattleBit Remastered. We matched them by the tags players give PEAK.53 on Steam (Multiplayer, Shooter, Tactical, Third-Person Shooter, and Third Person): closest matches first, and among equally close ones the better-known games.

PUBG: BATTLEGROUNDS
Shared: Shooter · Multiplayer · PvP

WARDOGS
Shared: Multiplayer · PvP · Tactical

Squad
Shared: Multiplayer · PvP · Military

Arma 3
Shared: Multiplayer · Shooter · Military

BattleBit Remastered
Shared: Multiplayer · Shooter · PvP

Call of Duty®
Shared: Multiplayer · Shooter · Military

Battlefield™ 6
Shared: Multiplayer · Shooter · Military

Insurgency: Sandstorm
Shared: Shooter · Multiplayer · Tactical

World of Warships
Shared: Multiplayer · Shooter · PvP

Tom Clancy's Ghost Recon® Wildlands
Shared: Multiplayer · Shooter · Tactical

Battlefield™ 2042
Shared: Multiplayer · Shooter · Military

Holdfast: Nations At War
Shared: Multiplayer · Shooter · Military

ARC Raiders
Shared: Multiplayer · PvP · Shooter

Counter-Strike: Source
Shared: Shooter · Multiplayer · PvP

Hell Let Loose
Shared: Shooter · Multiplayer · Realistic

Battlefield™ V
Shared: Multiplayer · Shooter · PvP

Tom Clancy's Ghost Recon® Breakpoint
Shared: Multiplayer · Shooter · Military

Insurgency
Shared: Multiplayer · Tactical · Shooter

Zero Hour
Shared: Shooter · Tactical · Multiplayer

Grand Theft Auto V Legacy
Shared: Multiplayer · Shooter · Third Person

Bodycam
Shared: Multiplayer · Tactical · Shooter

Marvel Rivals
Shared: Multiplayer · PvP · Third-Person Shooter

Call of Duty®: Modern Warfare® II
Shared: Shooter · Multiplayer · Third-Person Shooter

Rogue Company
Shared: Multiplayer · Shooter · PvP