Verified answer
Is Control Resonant single-player on Xbox?
Quick answer
Yes. The official Xbox store lists Single player as a capability and names Xbox Series X|S and PC under Play with.
What this means
The presence of Xbox network services, cloud saves, or Play Anywhere does not add cooperative play. No Xbox multiplayer mode is listed.
Official source
Continue with the relevant guide
Open the related Control Resonant guide for the current topic summary, connected systems, and any later verified changes.
This answer is reviewed against pre-release official information. It states unknown boundaries explicitly and will be revised when Remedy or a first-party store publishes a newer fact.