You’ll need an area thats at least 10m x 10m (32ft x 32ft) for the Arena Mode to work.
Source: N4G PC Space Pirate Trainer DX Update Adds Arena Mode to Oculus Quest in September
You’ll need an area thats at least 10m x 10m (32ft x 32ft) for the Arena Mode to work.
Source: N4G PC Space Pirate Trainer DX Update Adds Arena Mode to Oculus Quest in September