It could be that we can look forward to the relaunch of “Multiversus” soon. At least there is now a first sign that gives hope.
The “Multiversus” social media account has been reactivated and promises an announcement about an update to the game soon. The last quasi-sign of life for “Multiversus” came from June of last year, when the title went completely offline and a restart was promised for this year. So it's best to just wait and see what happens next. The current developments are at least promising. Developer Play First Games has at least repeatedly spoken of a comeback at the beginning of 2024 and that would be a good time.
When it eventually releases, the full version of “Multiversus” will be playable on PS4, PS5, Xbox One, Xbox Series X and PC.