Blind Descent Multiplayer and Crossplay

The quick answer

Blind Descent supports solo play and co-op for up to four players total. In the October Steam playtest, friends can join after the opening infection cutscene.

October Steam co-op playtest and planned PC Early Access

When friends can join

In the October Steam playtest, finish the infection cutscene in the opening cave before friends join your session. A full co-op group has four players, including the host.

PC Early Access crossplay

The PC Early Access plan covers crossplay between Steam, GOG and the Epic Games Store. The plan calls for a shared world and quests, with each player keeping their own inventory and mutations.