The ? Coin or Question Coin, is a special coin in Super Mario Galaxy. It is

The Question Coin

a large, yellow Coin with a question mark on it. When one has been collected four things can happen.

  • A Mario theme will play and a line of musical notes will appear for Mario to collect. This usually causes three 1up Mushrooms to appear, or very rarely, a Power Star.
  • An accumulation of Star Bits or Coins to appear.
  • A Power Up will appear.
  • Another ? coin will appear.

These coins appear in many galaxies like Good Egg Galaxy.

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