Games like Diddy
Games like Diddy include PUBG: BATTLEGROUNDS, Grand Theft Auto V Legacy, Tomb Raider Game of the Year, Escape From Duckov, and Rise of the Tomb Raider™. We matched them by the tags players give Diddy on Steam (Action, Adventure, Simulation, Third Person, and Interactive Fiction): closest matches first, and among equally close ones the better-known games.

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · PvP

Grand Theft Auto V Legacy
Shared: Action · Third Person · Adventure

Tomb Raider Game of the Year
Shared: Action · Adventure · Third Person

Escape From Duckov
Shared: Action · Adventure · Shooter

Rise of the Tomb Raider™
Shared: Action · Adventure · Third Person

A Plague Tale: Requiem
Shared: Action · Adventure · Third Person

Red Dead Redemption 2
Shared: Adventure · Action · Shooter

Aimlabs
Shared: Action · Simulation · Shooter

Squirrel with a Gun
Shared: Action · Simulation · Shooter

Warhammer 40,000: Space Marine 2
Shared: Action · Adventure · Third Person

Arma 3
Shared: Action · Simulation · Shooter

Kena: Bridge of Spirits
Shared: Action · Adventure · Third Person

Sonic Frontiers
Shared: Adventure · Action · 3D Platformer

Just Cause™ 3
Shared: Action · Adventure · Shooter

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

Just Cause 2
Shared: Action · Adventure · Third Person

Hand Simulator: Survival
Shared: Adventure · Simulation · PvP

UNCHARTED™: Legacy of Thieves Collection
Shared: Adventure · Action · Third Person

Ratchet & Clank: Rift Apart
Shared: Adventure · Action · Third Person

Grand Theft Auto V Enhanced
Shared: Action · Adventure · Third Person

WARDOGS
Shared: Action · PvP · Shooter

Watch Dogs®: Legion
Shared: Action · Adventure · Shooter

Gears 5
Shared: Action · Adventure · Shooter

Tomb Raider: Underworld
Shared: Action · Adventure · Third Person

