Fabrication

• Adventure Tags In Survival – Makes CanDestroy/CanPlaceOn work in Survival
• Better Pause Freezing – Makes textures not tick while the game is paused
• Boundless Levels – Fixes enchantment.level.27
• Colored Crack Particles – Makes "crack" particles honor item coloration, such as leather armor dye
• Furnace Minecart Pushing – Right-clicking a furnace minecart pushes it; silently removed around 17w46a
• Ghast Charging – Brings back the ghast "charging" animation that broke in 1.3
• Inanimates Can Be Invisible – Makes inanimate entities honor the "invisible" tag sent by the server
• Multiline Sign Paste – Allows pasting multiple lines of text into a sign
• No Night Vision Flashing – Disables the flashing effect when Night Vision is about to run out
• Omniscent Player – The player render in the inventory always follows your cursor
• Silverfish Step – Fixes an oversight that prevents silverfish from playing their step sound
• Stable Cacti – Makes cacti less afraid
• Sync Attacker Yaw – Correctly sync the last attacker yaw for damage tilt; fixes MC-26678
• Uncap Menu FPS – Removes the hardcoded 60 FPS cap in menu screens
• Use Player List Name In Tag – Changes player name tags to match names in the player list

Utility – Useful tidbits that don't modify gameplay

• Books Show Enchants – Enchanted books show the first letter of their enchant
• CanHit – A CanHit tag for weapons in the same vein as CanDestroy/CanPlaceOn
• Despawning Items Blink – Makes items that are about to despawn blink
• Hide Armor – Adds /hidearmor and /showarmor commands to hide and show your armor
• /i And More – Adds /i, /item, /more, and /fenchant commands
• Item Despawn Control – Allows fine-grained control over item despawn times
• KillMessage – Allows customizing kill messages for summoned entities and spawned items
• Legacy Command Syntax – Brings back various kinds of old command syntax; old habits die hard
• Mob IDs – Makes entities show their entity ID as a nametag in Creative when F3 is up
• /mods Command – Adds a /mods command in the same vein as Bukkit's /plugins
• Taggable Players – Allows assigning various "tags" to players, such as no_hunger or invisible_to_mobs
• Toggle Stance – Adds a "Toggle Stance" keybind to switch between standing and sneaking
• Tools Show Important Enchant – Tools show the first letter of their "important" enchant
• Yeet Recipes – Adds a yeet_recipes.ini that can be used to completely hide any recipe

Tweaks – Minor changes that fit with vanilla

• Alt Absorption Sound – New in v1.3.4 Taking damage that is completely absorbed by Absorption plays a different (custom) sound
• Arrows Work In Water – Reduces arrow drag in water by a fair bit to make bows useful underwater
• Bush Walk Doesn't Hurt With Armor – Walking through berry bushes with both legging and boots equipped doesn't hurt
• Cactus Brush Doesn't Hurt With Chest – Touching the side of a cactus with a chestplate on doesn't hurt
• Cactus Walk Doesn't Hurt With Boots – Walking on top of a cactus with boots on doesn't hurt
• Campfires Place Unlit – Campfires are unlit when placed and must be lit with a Flint and Steel
• Cracking Spawn Eggs – Spawn eggs spawn cracking particles and play a sound when used
• Creepers Explode When On Fire – Causes creepers to light their fuses when lit on fire
• Feather Falling No Trample – Farmland will not get trampled when wearing feather falling
• Flammable Cobwebs – Cobwebs can burn
• Fullres Banner Shields – Makes shields use the full-res banner patterns instead of weird smaller versions
• Ghast Panic – Makes ghasts randomly play the unused "scream" sound when outside of the Nether
• Legible Signs – Adjusts sign text colors to be less garbage
• Less Annoying Fire – Shortens the fire overlay and hides it when you have Fire Resistance
• Less Restrictive Note Blocks – Makes note blocks work with blocks above them
• Long Level Up Sound At 30 – Plays the old longer level up sound when you reach level 30
• Nether Cauldron – Water evaporates when being placed inside a cauldron in the nether
• No Dinnerlava – Disables the generation of 1 block hidden lava pockets in the Nether
• No Sneak Bypass – Blocks which would normally not affect players when sneaking will
• Normal Fog With Night Vision – Disables the fog brightening effect with Night Vision
• Play Note Blocks In Creative – Allows sneaking when punching note blocks to play them in Creative mode
• Rainbow Experience – Makes experience random colors instead of just lime green
• Reverse Note Block Tuning – Sneaking while tuning a note block reduces its pitch rather than increases
• Shulker Bullets Despawn On Death – Makes shulker bullets despawn when the shulker that shot them is killed
• Silent Minecarts – New in v1.3.3 Makes minecarts not make noise
• Tridents In Void Return – Loyalty tridents return when falling into the Void

Minor Mechanics – Small additions to vanilla mechanics

• Crawling – Adds a key to explicitly enter the "crawling" stance
• Exact Note Block Tuning – Right-clicking a note block with a stack of sticks sets its pitch to the size of the stack minus one
• Feather Falling V – Makes Feather Falling V a valid enchant that completely negates fall damage
• Feather Falling V Damages Boots – Makes absorbing fall damage with Feather Falling V cause damage to the boots
• Fire Aspect Is Flint And Steel – Makes Fire Aspect tools act like Flint and Steel
• Fire Protection On Any Item – Fire Protection can be applied to any enchantable item, and makes the item immune to fire and lava damage
• Furnace Minecart Accepts Any Fuel – Allows furnace minecarts to accept any furnace fuel, rather than just coal and charcoal
• InfiBows – Makes Infinity bows not require an arrow in your inventory to fire
• Invisibility Splash On Inanimates – Invisibility splash potions affect inanimates (minecarts, arrows, etc) making them invisible
• Mechanism Muffling – Placing a block of wool adjacent to a dispenser, dropper, or piston makes it silent
• Note Block Notes – Tells you the note the note block has been tuned to when tuning it or playing it manually above your hotbar
• Note Blocks Play On Landing – Makes note blocks play when landed on
• Observers See Entities – Observers detect when entities move in front of them if they have no block in front of them
• Observers See Entities – Living Only – Observers only detect living entities, and not e.g. item entities
• Spiders Can't Climb Glazed Terracotta – Makes spiders unable to climb glazed terracotta
• Spiders Can't Climb While Wet – Makes spiders unable to climb while wet
• Water Fills On Break – Water source blocks fill in broken blocks instead of air under some conditions

Mechanics – New mechanics and powerful additions

• Anvil Repair – Allows right-clicking on an anvil with a Block of Iron to repair it one stage
• Bottled Air – New in v1.3.3 Filling a glass bottle underwater refills 1 air bubble
• Broken Gear Drops Components – Makes gear drop its consituent items when broken
• Enhanced Moistness – Entities are considered "wet" for 5 seconds after leaving a source of wetness
• Grindstone Disenchanting – Placing a book in the bottom slot of a Grindstone when disenchanting an item will transfer the enchantments onto the book
• Obsidian Tears – Lets you set your spawn at a Crying Obsidian block; automatable
• Pursurvers – Adds "Pursurvers", observers with a Purpur block next to them, that can detect left-clicks on their watched block
• Slow Fall Splash On Inanimates – Slow fall splash potions affect inanimates (minecarts, arrows, etc) making them unaffected by gravity

Balance – Changes to vanilla balance

• Anvils Take Damage Only When Falling – Anvils only take damage when falling from a height rather than randomly after being used
• Anvil Rename Always Costs One – Makes renaming an item on an anvil always cost one level
• Bedrock-Like Impaling – Makes the Impaling enchantment act like it does in Bedrock Edition and Combat Test 4
• Disable Prior Work Penalty – Disables the anvil prior work penalty when an item has been worked multiple times
• Drop More Experience On Death – Players drop 80% of their experience when dying instead of basically nothing
• Environmentally Friendly Creepers – Creeper explosions deal entity damage, but not block damage, even if mobGriefing is true
• Faster Obsidian – Makes obsidian and obsidian-related blocks break 3× faster
• Food Always Edible – Allows players to eat unconditionally
• Hyperspeed Furnace Minecart – Makes furnace minecarts very fast and burn fuel more quickly
• Infinity Crossbows – Allow putting Infinity on crossbows
• Infinity & Mending – Makes Mending and Infinity compatible enchantments
• ChunkLoading Furnace Minecart – New in v1.3.4 Makes furnace minecarts load chunks if they have fuel
• Soul Speed Doesn't Damage Boots – Makes running on soul blocks with Soul Speed not deal damage to your boots
• Spawners Always Tick – Spawners always count down their spawn timers, even if no player is nearby
• Tridents Accept Power – Allows tridents to accept the Power enchantment, increasing their ranged damage
• Tridents Accept Sharpness – Allows tridents to accept the Sharpness enchantment, increasing their melee damage

Weird Tweaks – Opinionated changes

• Dimensional Tools – Completely configurable dimensional tool bonuses/penalties
• Disable Equip Sound – Disables the unnecessary "Gear equips" sound that plays when your hands change, and is often glitchily played every tick
• Drop Experience With keepInventory – If keepInventory is enabled, players still drop their experience when dying, but do so losslessly
• Endermen Don't Grief – New in v1.3.4 Endermen no longer place or pickup blocks
• Endermen Don't Squeal – Makes Endermen not make their growling or screeching sounds when angry
• Instant Pickup – Drops from blocks and entities are instantly placed in your inventory if there's room
• Photoallergic Creepers – Creepers burn in sunlight
• Photoresistant Mobs – Mobs don't burn in sunlight
• Déjà Void – Players falling into the void teleports them back to the last place they were on the ground and deals 6 hearts of unblockable void damage
• Underwater Explosions – TNT and other explosives do block damage even underwater

What's Old Is New Again – Forward ports of forgotten tidbits

• Billboard Drops – Brings back billboarded flat item drops like on Fast graphics prior to 1.8 or like always prior to 1.4
• Blinking Drops – Drops blink white like they did in Survival Test
• Block Logo – Resurrects the Beta 1.2-era animated falling block logo
• Classic Block Drops – Draws block drops with a mipmapped or small portion of the texture
• Flat Items – Brings back Indev flat first-person item models
• Janky Arm – Brings back Survival Test arm rotation
• No Experience – New in v1.3.3 Removes experience
• Old Lava – Resurrects the old procedural lava texture from 1.4
• Old Sheep Shear – New in v1.3.4 Sheep drop wool when punched
• Oof – Brings back the old "Oof" hurt sound

Pedantry – Fixes for non-problems

• Oak Is Apple – Oak trees become apple trees
• TNT Is Dynamite – TNT is renamed to Dynamite and doesn't say TNT on it

Situational – Rarely useful small features

• All Damage Is Fatal – Any amount of damage done to an entity is unconditionally fatal
• Disable Bees – New in v1.3.4 Disables bee nest generation and all bee sounds
• Disable Elytra – New in v1.3.3 Prevents using Elytra
• Player Free Spawners – Mob spawners don't require a player nearby to spawn
• Weapons Accept Silk – Weapons can be enchanted with Silk Touch, and Silk Touch becomes incompatible with Looting

Experiments – Bad ideas given form

• No Set Window Pos – Prevents the game from manually modifying the window position
• Packed Atlases – Disables rounding of atlases to the next power-of-two