The official launch answer
Keen’s October 13 launch FAQ says cross-platform play is not included at the full release launch. The team is working on it but supplies no delivery estimate. That is a more specific answer than older community wording that calls crossplay merely unconfirmed.
Ordinary PC multiplayer is a different feature from playing across PC and consoles. PC users joining the same world demonstrate online co-op within that platform. They do not demonstrate that a PlayStation client can join the same session.
Make the platform decision as a group
Choose the same platform as friends when launch co-op is the priority. Compare the group size with that platform’s published capacity before buying. PC support for sixteen players should not be copied into a PS5 plan, whose store listing allows eight online players.
PlayStation’s store also lists PS Plus for online play. Include that requirement when comparing the practical cost of a shared PS5 session. The PS5 guide and multiplayer guide keep these platform details together.
- Have the group choose the same platform for launch co-op.
- For group size, distinguish PC support from the PS5 listing.
- Do not buy another platform copy on the assumption that worlds can be shared across platforms.
- Monitor developer announcements for crossplay; there is no verified release window.
Cross-save and save conversion are separate
Cross-save support is not established by the reviewed material. Moving an existing save into a newer PC version is a different process from moving progress between platform accounts. Do not purchase a second platform copy on the assumption that your world or character will transfer.
The save compatibility guide covers Keen’s confirmation that Early Access saves can be converted. That confirmation answers a version-upgrade question. It does not override the launch crossplay answer or establish console cross-save.
What later announcements need to confirm
The developer has not given a crossplay delivery window in the reviewed FAQ. A later platform launch should therefore be checked for its own multiplayer announcements. In particular, the Xbox release window cannot be treated as a crossplay deadline.
The trailer references confirm platforms and launch dates rather than cross-platform networking. Community summaries are useful only while they agree with the explicit developer answer. Recheck the official FAQ when planning a session after a substantial platform update.