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Nether Reactor

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Nether Reactor
Nether Reactor
First Appearance Minecraft Pocket Edition
Type of Block Solid
Tool Used Pickaxe Graphic
Data Values Hex: F7
Blast Resistance 30
Obeys Physics?

The Nether Reactor is a block that is crafted by the player to form the Nether Spire. It is crafted with three diamonds and six iron ingots. The block is exclusive to Minecraft: Pocket Edition as a replacement of the Nether, which is found in both Minecraft XBLA and Minecraft for the PC.


Once the pattern is built, all players must stand within a certain range of the Nether Reactor. If the pattern is somehow incorrect, there will be a text message that just says "Incorrect pattern!". Once it is hit (while it is in the correct pattern), a text message that says "Active!" will pop up, and the Nether Spire will be formed around it. The Cobblestone will then change to Glowing Obsidian, which is a red obsidian-like block. After a while, the Gold Blocks will too become glowing Obsidian. Before they do though, you may mine them for reusing. While the Reactor is active, it will spurt out many items and blocks, as well as spawning Zombie Pigmen. The Zombie Pigmen are naturally hostile to you. After 45 seconds, the Reactor will stop spawning items and Zombie Pigmen. Holes in the Nether Spire will appear, and all the Glowing Obsidian will become normal Obsidian. The core will then become a dull blue, and can be mined and reused.


(No crafting recipe, as the block is PE-exclusive.)

Nether Reactor
Bottom Layer
Nether Reactor
Middle Layer
Block of Gold Cobblestone Block of Gold Cobblestone None Cobblestone
Cobblestone Cobblestone Cobblestone None Nether Reactor Core None
Block of Gold Cobblestone Block of Gold Cobblestone None Cobblestone
Nether Reactor
Top Layer
None Cobblestone None
Cobblestone Cobblestone Cobblestone
None Cobblestone None

Tutorials for Building the Activator

Minecraft PE - How to use the Nether Reactor Core TUTORIAL - Updated! 04:04

Minecraft PE - How to use the Nether Reactor Core TUTORIAL - Updated!

Making the Nether Reactor Core- Minecraft 04:27

Making the Nether Reactor Core- Minecraft


  • Zombie Pigmen are naturally hostile to you, so fight them immediately.
  • If a player has a Pickaxe, he or she can quickly mine out the gold blocks before they convert to Glowing Obsidian. The reactor will still function as normally.
  • Zombie Pigmen drop gold ingots, so killing enough Zombie Pigmen can produce enough gold for a new visit to the reactor.
  • Because the Nether Spire is a tall, dark room, it can be used as a mob farm.


  • The reactor design was planned to use gold and iron blocks, but the iron was changed to cobblestone because of it's price.
  • The Zombie Pigmen are naturally hostile.
  • The Zombie Pigmen will burn in daylight like a regular Zombie but not take damage like in Minecraft PC because they are fire resistant.
  • If you quit to title while the Reactor is still active, the holes will not appear when it burns out.
  • Prior to the 0.6.0 update, the Nether Spire was made of Obsidian. This is because Netherrack did not exist yet.
  • Activating the Nether Reactor at Bedrock level will cause the Netherrack to cut through the Void. This can be used for access in Survival Mode.
  • The Reactor does not work in Creative Mode. (This is intentional.)
  • If in any future update they let Nether portals made of Obsidian actually work, this block may be used as a decoration.
  • If you destroy the nether reactor in Pocket Edition while it is active the obsidian will still glow as if active infinitely but will now spawn any materials or Zombie Pigmen. You can stop this by quiting the game and returning to it or mining the obsidian. Also, the nether tower will not have holes in them untill you make any. Night is infinite untill the obsidian is mined or the game is quit. Sleeping will not stop this.
  • Normally in Pocket Edition, only 3 zombie pigmen appear at a time until killed. 6 Zombie Pigmen will spawn before the core is done if you kill them continuously.
  • If the reactor is built after a certain height and try to activate it, a messege will display saying "The nether reactor must be built lower down".

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