Spinoff or Mainline?

What's a spinoff? What's a mainline? What's a Mario Kart Live: Home Circuit? Edited by Sam Essig Merchandise: https://blueborder.store Main Channel: ‪@ScottTheWoz‬ Highlights Channel: ‪@ScottsSnippets‬ Twitter:   / scottthewoz   Bluesky: https://bsky.app/profile/scottthewoz.... Facebook:   / scottthewoz   Instagram:   / scottthewoz   Blue Border Entertainment's Twitter: https://x.com/BlueBorderEnt Blue Border Entertainment's Bluesky: https://bsky.app/profile/blueborderen... Blue Border Entertainment's Instagram:   / blueborderentertainment