In October 2015, Infinity's name was changed to Infinity Evolved, (and its release versions were bumped to 2.0.0) and featured the addition of two notable new mods: FTB Utilities and FTB Tweaks. The most significant addition from this was the creation of two difficulties: normal mode and Expert Mode. With FTB Tweaks, these difficulties could be exchanged on the fly, without even a server restart. Infinity Evolved Expert Mode (commonly abbreviated as "IE:E") featured many, many recipe changes intended to force players to use every major mod in the pack to reach their end-game goals, and added a series of Extreme Crafting Recipes for certain items normally obtainable only in Creative Mode.
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