The online mode is technically part of a free update called , but there are some requirements to get it running:
Tears, Toil, and Togetherness: The Binding of Isaac Rebirth Goes Online The Binding of Isaac: Rebirth online
: If a teammate falls, you can use the Revive Machine by donating coins (starting at 10) to bring them back into the fray. The "Considerable" Balance Update The online mode is technically part of a
This isn't just a simple patch; it's a fundamental shift in how the game plays: The Binding of Isaac: Rebirth online