Is Hell Let Loose: Vietnam crossplay?

Yes. Team17 says the game supports cross-platform play across PC and current-generation consoles. Servers can be labeled cross-platform, PC only, or console only.

Is Hell Let Loose: Vietnam on Game Pass?

At the August 13 check, the Xbox store sold the game separately and Game Cluebook found no official Game Pass catalog-inclusion announcement. A Game Pass subscription requirement for online console multiplayer is not the same as the game being included in the catalog.

Hell Let Loose: Vietnam Crossplay, Platforms & Game Pass

Short answer

The useful part first.

Yes—Hell Let Loose: Vietnam supports cross-platform multiplayer across PC, PlayStation 5, and Xbox Series X|S. Crossplay is not forced on every server. Team17 says servers can be tagged as cross-platform, PC only, or console only, and server owners can choose which platforms they allow.

How the server labels work

Cross-platformPC and/or supported consoles, based on the server owner’s selection

PC onlyPC storefront players without console players

Console onlyCurrent-generation console players without PC players

This is more precise than saying “crossplay is always on.” The feature exists at launch, while the server list gives players and server operators a choice.

Supported launch platforms

PC: Steam, Epic Games Store, and the Microsoft/Xbox ecosystem.
PlayStation: PlayStation 5.
Xbox: Xbox Series X|S; the Xbox listing also shows Xbox Play Anywhere and PC support.

We found no official PS4, Xbox One, Nintendo Switch, or macOS launch listing. Do not treat an unsupported platform search suggestion as a port announcement.

Is the game included with Game Pass?

At this check, the Xbox store listed Hell Let Loose: Vietnam as a separate paid purchase. We found no official announcement that the game itself was entering the Game Pass catalog at launch.

That is separate from the multiplayer subscription requirement. Xbox says online console multiplayer requires Game Pass Essential, Premium, or Ultimate. PlayStation says PS Plus is required for online play. Paying for online multiplayer access does not automatically include the game.

Does crossplay also mean cross-save?

No official source used for this page confirms shared progression or cross-save. Cross-platform multiplayer, Xbox Play Anywhere, and cross-save are different features. Until Team17 publishes an account-progression statement, do not assume unlocks transfer between every storefront and console.