Although does not officially support online multiplayer, players have developed several highly effective workarounds to play with friends remotely. Officially, the game is designed strictly for local co-op only. Official Multiplayer Status

By default, you can play as Cuphead and Mugman (or Ms. Chalice with the DLC) on the same system.

There is no official "online" menu or matchmaking within the game itself.

To play "online," players typically use software that simulates a local environment by streaming the host's screen and sending the second player's controller inputs back. How To Play Cuphead Online Multiplayer | Parsec Blog

While developers have expressed interest in online functionality in the past, it has not been implemented as of 2026. Popular Workarounds for Online Play