How multiplayer, crossplay & couch co-op work - Diablo 4

Diablo 4 multiplayer lets you team up in co-op with anyone, thanks to crossplay, though couch co-op is a different matter

Diablo 4 multiplayer explained: Adding friends, crossplay options, benefits, and couch co-op breakdown

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How Does Multiplayer Couch Co-op Work in Diablo 4 - N4G

Diablo 4 crossplay feature explained: All content you can enjoy with friends on other platforms

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