Survivor Party!!

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Across
  1. 3. What you are competing for
  2. 4. Large marsupial native to this island
  3. 7. Name of the game
  4. 8. The person whose birthday this is!
  5. 10. The name of one of the tribes
Down
  1. 1. The previous challenge contained this
  2. 2. The prize is a gift card for this site
  3. 5. The setting of this game
  4. 6. The "team" that you are competing on
  5. 9. This is where you go before and after a challenge