There's a list of restricted items that either can't be crafted, can't be used or both.
Enderchests
Yes
No
Eye of Ender
End Crystals
Shulker Boxes
Hoppers
Firework Rockets
Pistons
Sticky Pistons
Observers
Smithing Template - Netherite Upgrade
List of restrictions imposed in general
Going beyond the Bedrock Layer in the Nether is restricted.
List of mechanical changes in general
Players can no longer place beds in the Nether.
Iron Golems now drop Iron Nuggets instead of Iron Ingots.
Diamond Ores (and Deepslate Diamond Ores) now drop Diamond Scrap which can be combined to craft a Diamond. (See Mining)
Vanilla Enchanting now consumes all required levels, i.e., a maxed Tier III enchantment will always consume 30 Vanilla Experience Levels.
Last updated 2 years ago