As of April 2026, remains a single-player experience, and the developers have stated they currently have no plans to add a multiplayer or co-op mode . Their focus remains on expanding the single-player content, such as the upcoming "Crimson Fall" DLC scheduled for release in 2026.
If you are looking for a similar border-control experience that does support multiplayer, you might consider the for Police Simulator: Patrol Officers . This expansion was released on November 19, 2025, and includes full cooperative gameplay support. Summary of Multiplayer Options Contraband Police Multiplayer