: Online play often mirrors Serious Sam 4 ’s issues. Reviewers from New Game Network noted network lag, desynced projectiles (like rockets not being where they appear), and long loading times that can leave joining players miles behind the host.
The game supports online cooperative play for the entire campaign and its expanded survival mode. Serious Sam Siberian Mayhem Online
: On PlayStation 5 and Xbox Series X/S, frame rates can dip into the 30s or 40s during intense co-op sessions, particularly in detail-heavy blizzards. Community Perspectives : Online play often mirrors Serious Sam 4 ’s issues