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New Mauville Adventure
Pokemon Emerald

New Mauville Adventure

Complete the New Mauville Adventure in Pokemon Emerald to get the basement key from Wattson and earn TM24: Thunderbolt.

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Complete the New Mauville Adventure in Pokemon Emerald to get the basement key from Wattson and earn TM24: Thunderbolt.

Walkthrough
  1. 1
    Head to Mauville City and speak with Wattson outside the Pokemon Center (the building where you heal your Pokemon) to receive the basement key.
  2. 2
    Return to Route 110 and use the move Surf to travel across the water to the cave entrance.
  3. 3
    Enter the cave and use the basement key to unlock the door.
  4. 4
    Inside New Mauville, hit the blue switch to open the blue gate to the left.
  5. 5
    Enter the blue gate and hit the green switch.
  6. 6
    Head left and then right into a room to find an Ultra Ball.
  7. 7
    Return left and head north into an opening to find an Escape Rope.
  8. 8
    Go back to where the Escape Rope was, hit the blue switch, and go through the newly opened gate to your left.
  9. 9
    Head north and pick up the Paralyze Heal on the left; the item on the right is a wild Voltorb.
  10. 10
    Continue north, ignoring the switches, and head south to find a full Heal on the right, which also contains a green switch. Hit it to open the gate to the right.
  11. 11
    Enter the room to the right and hit the red switch to stop the generator. Collect the Thunderstone to the right of the generator.
  12. 12
    Head back left, go south, and battle the Voltorb posing as an item.
  13. 13
    Hit the blue switch and head back left.
  14. 14
    Continue south and then east into the next area. Battle the Voltorb posing as an item on the right.
  15. 15
    Hit the green switch to open both gates.
  16. 16
    Head south through the small opening, then take the gate on the right to return to the area where the Ultra Ball was.
  17. 17
    Follow the path to the staircase, head up, and exit the cave back onto Route 110.
  18. 18
    Surf back to Mauville City.
  19. 19
    Speak with Wattson to receive TM24: Thunderbolt.

New Mauville Pokemon:

  • Voltorb (Very Common)
  • Magnemite (Very Common)
  • Electrode (Very Rare)
  • Magneton (Very Rare)
Tips
  • Be aware that some items in New Mauville are actually wild Voltorb.
  • You cannot have both blue and green switches activated simultaneously; they open and close different doors.
  • Voltorb can evolve into Electrode, which is very fast and can use the move Explosion for high damage, though it may cause your own Pokemon to faint.
  • Magnemite is an Electric/Steel type with good defense and attacks, weak only to Fire, Fighting, and Ground-type moves.
  • TM24: Thunderbolt is an electric-type move with 95 power and 100 accuracy, with a chance to paralyze, making it a powerful move for the rest of the game.

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