All about me

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Across
  1. 6. he's indisputably a genius in gaming, but he's also mad as a hatter"
  2. 8. keeping others out of harm's way
  3. 9. causes disorder and confusion in games
  4. 10. doing work others consider harder
Down
  1. 1. loves games and problems designed to test ingenuity or knowledge.
  2. 2. opposite of extroverted
  3. 3. pointing out the obvious at times in a certain tone
  4. 4. a term used for a joke on the internet
  5. 5. always using caffeine
  6. 7. kind and pleasant.