. You can play the entire campaign co-op or jump into competitive arena matches via public matchmaking or private lobbies. Review: A Timeless Chaos-Fest Castle Crashers
Castle Crashers does not support cross-platform multiplayer. A player on a Switch cannot join a game hosted on a PC, PlayStation, or Xbox. Everyone must be on the same family of devices (e.g., all on Steam, or all on Switch). does castle crashers have online multiplayer
This is where things get tricky.
So,