Crossplay

Is Fallout 4: Contraptions Workshop crossplay?

Crossplay does not apply to Fallout 4: Contraptions Workshop: it has no online multiplayer.

Contraptions Workshop is the downloadable content (DLC) for the 2015 game Fallout 4. It focuses completely on the workshop feature. It adds a number of new world objects, and the ability to create machines and other machinery to create a factories.