Co-op can be a great experience in the Elden Ring expansion Shadow of the Erdtree, but there’s one quirk that limits it in a way that can occasionally be frustrating. Although games from Elden Ring developer FromSoftware tend to focus on single-player, they usually incorporate some unique multiplayer features that can add interesting layers. Even those venturing through Elden Ring and Shadow of the Erdtree alone will encounter messages strewn across the world, and it’s possible to summon other players or join their own worlds for brief bouts of collaboration or opposition.