Games like Drug Dealer Simulator 2
Games like Drug Dealer Simulator 2 include Grand Theft Auto V Legacy, Schedule I, Mount & Blade II: Bannerlord, Drug Dealer Simulator, and Rust. We matched them by the tags players give Drug Dealer Simulator 2 on Steam (Multiplayer, Simulation, Open World, Crime, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Grand Theft Auto V Legacy
Shared: Multiplayer · Open World · Crime

Schedule I
Shared: Simulation · Crime · Multiplayer

Mount & Blade II: Bannerlord
Shared: Open World · Multiplayer · RPG

Drug Dealer Simulator
Shared: Simulation · Crime · Open World

Rust
Shared: Multiplayer · Open World · Crafting

Mount & Blade: Warband
Shared: Open World · Multiplayer · RPG

Grand Theft Auto IV: The Complete Edition
Shared: Open World · Multiplayer · Crime

Thief Simulator
Shared: Simulation · Singleplayer · Crime

Arma 3
Shared: Multiplayer · Simulation · Action

Once Human
Shared: Multiplayer · Open World · Action

Don't Starve Together
Shared: Multiplayer · Open World · Simulation

Grand Theft Auto V Enhanced
Shared: Open World · Multiplayer · Crime

Red Dead Redemption 2
Shared: Open World · Multiplayer · Action

Stardew Valley
Shared: Multiplayer · Simulation · RPG

Sons Of The Forest
Shared: Multiplayer · Open World · First-Person

ARK: Survival Evolved
Shared: Multiplayer · Open World · Crafting

Raft
Shared: Multiplayer · Open World · Crafting

Fallout 4
Shared: Open World · Singleplayer · RPG

Green Hell
Shared: Multiplayer · Open World · Action

Medieval Dynasty
Shared: Multiplayer · Open World · Crafting

Where Winds Meet
Shared: Multiplayer · Open World · Singleplayer

Supermarket Simulator
Shared: Simulation · Multiplayer · Singleplayer

Far Cry 3
Shared: Open World · Multiplayer · Action

No Man's Sky
Shared: Open World · Multiplayer · First-Person