1,000,000 XP Levels in Hardcore Minecraft...

The video discusses Mistaken achieving one million levels in hardcore Minecraft in just six days, a feat initially thought impossible, even with the most efficient XP farms like the God Particle farm, which would normally take six years. Mistaken’s journey began while researching his second Notch armor project, requiring 30,000 to 40,000 levels, double his previous needs. To speed up the process, he scoured bug reports and obscure wiki entries. He discovered that Minecraft’s exponential leveling equation, which makes each subsequent level harder to attain, isn't consistent across all versions. He found a 1.3 snapshot, specifically 12w22A, where the entire backend exponential equation was replaced with the number 17. This meant that regardless of current level, only 17 XP was needed to level up, creating a perfectly linear progression. This discovery meant his Enderman XP farm could get all necessary levels for his armor project in a single day. However, realizing the potential, he aimed higher than 40,000 levels, targeting a million. Even with this broken version, his Enderman farm would still require 300 hours of AFK time, or three months of non-stop Enderman punching. This led him to reconsider XP duplication methods. He realized the God Particle Farm was essentially an XP dupe. Coincidentally, the version right before 12w22A introduced bottles of enchanting to villager trading loot tables. After hundreds of tries, he found a priest villager selling bottles of enchanting as a first trade. Next, he needed a working dupe for the bottles. He used "understacking," an exploit allowing the creation of items with negative or zero counts, making them infinite. By lighting TNT near a chest and quickly removing the item, an understacked item is created. With an understacked bottle of enchanting, and an auto-clicker set to throw bottles at 170-millisecond intervals (the sweet spot to avoid lag), he began AFKing. He achieved 6,760 levels an hour, or about 162,000 levels per day. After six days and four hours of AFKing, Mistaken became the first vanilla Minecraft player to hit one million levels, a seven-digit level count that would have taken six years with the strongest known XP farm. He notes that this method is incredibly simple and accessible, transforming the monumental task of reaching a million levels into something akin to ordering a pizza.