Ender's game

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Across
  1. 3. The creature that valentine found skinned in the forrest
  2. 4. The creature Ender killed in the videogame and dvarves made a city out of
  3. 5. The floor of battle school
  4. 7. Where Ender and valentine talked when Ender came back
  5. 8. The things that made nuclear weapons ineffective
  6. 10. Headmaster of battle school
Down
  1. 1. Ender's violent brother
  2. 2. Enemy alien race
  3. 6. The item used to learn and play games
  4. 9. Where the real problems were