Super Smash Bros. Ultimate Custom Match

From the main menu, select “Online” and navigate to “Smash”.

From the three main options, select “Battle Arenas”.

Select “Create Arena” to be taken to the Arena settings menu. 

Set rules to comply with your community's rules. When ready, hit “Next”. 

Enter a name and password for the arena, then select “Create Arena”. This information will be shared with your opponent on the Match Page.

To join an arena, navigate to “Battle Arenas”, select “Join”, and enter the arena information provided by your opponent.

All active participants must select and drag their player icon into the ring before beginning the match.