Nether Reactor

Creation
The reactor was constructed by placing gold blocks, cobblestone, and a nether reactor core in the 3x3x3 arrangement shown below. Air blocks were required on the middle and top layers. If the structure was incorrect, attempting to activate the reactor resulted in the client message "Not the correct pattern!".

Behavior
Tapping the core activated the reactor, sending the client message "Active!". Immediately after activation, a massive 35×17×17 structure of netherrack with multiple rooms, unofficially referred to as a "Nether Spire", was generated around the reactor. The bottom room, which contains the reactor, replaced all blocks other than those of the reactor with air, while blocks in the upper levels remained intact.

Items would begin to spawn within the reactor room, including glowstone dust, nether quartz, cacti, sugar canes, both types of mushrooms, bowls, pumpkin seeds, and melon seeds. Zombie pigmen were also able to spawn. It was advisable to empty out one's inventory beforehand so that no items were missed, other than any weapons used to fight the zombie pigmen (unless playing in peaceful difficulty). During this stage, the blocks that made up the reactor were converted into glowing obsidian, and the core adopted a red texture to symbolise activation. If the player mined the active core, all aspects of the reaction froze.

The reactor cycle would end after 45 seconds, damaging the reactor's structure and changing the world to night. The reactor was replaced with a 3×3×3 box of obsidian containing the core, which adopted a darker, blue-black texture to indicate that the reaction has ended. If the player built a new reactor around the burnt out core, the netherrack spire would generate, although the rest of the reaction would not take place.

Conditions

 * That all players were in range of the reactor's effects on activation.
 * That the reactor was built within the valid range (Y: 4-96).
 * That the player who activated the reactor was standing level with the structure.== History ==== Issues ==== Trivia ==== 66