Release date

Aug. 1, 2012

Development versions

View all Contents 1 12w15a 1.1 Changes 2 12w16a 2.1 Additions 2.2 Changes 3 12w17a 3.1 Additions 3.2 Changes 3.3 Fixes 4 12w18a 4.1 Additions 4.2 Changes 4.3 Fixes 5 12w19a 5.1 Additions 5.2 Changes 5.3 Fixes minecraft




Client (.json)

1.3.1 is an update that added trading All villager trades, separated by profession. The trading system is a gameplay mechanic that allows players to trade emeralds for items (and vice-versa) with villagers. Contents 1 Functionality 1.1 Brown Robed Villager 1.2 White Robed minecraft , adventure See the game mode. For the update, see Adventure Update. For the advancements, see Advancements#Adventure. Adventure mode is a game mode intended for player-created maps, limiting some of the gameplay in Minecraft. mode, new generated structures ( jungle Jungle Temple Biome Jungle Consists of See Blocks Can generate post-generation No First appearances See History Jungle temples are generated structures found in jungle biomes. Contents 1 Generation 2 Structure 2.1 Puzzle 2.2 Trap 2.3 minecraft and desert temples Desert Temple Biome Desert Consists of See Blocks Can generate post-generation No First appearances See History Desert temples are generated structures. Contents 1 Generation 2 Structure 2.1 Loot 2.2 Blocks 3 Video 4 History 5 minecraft ) and new blocks/items including emeralds Emerald Type Raw materials Durability N/A Renewable Yes Stackable Yes (64) First appearances See History Data value dec: 388 hex: 184 bin: 110000100 Name emerald See the gem. For the ore, see Emerald Ore. For minecraft , book and quills Book and Quill Type Manufactured items Durability N/A Renewable Yes Stackable No First appearances See History Data value dec: 386 hex: 182 bin: 110000010 Name writable_book Books and quills are items used to write written books. Contents 1 minecraft , written books Written Book Type Items Durability N/A Renewable Yes Stackable Yes (16) First appearances See History Data value dec: 387 hex: 183 bin: 110000011 Name written_book Written books are an item created after a book and quill is signed. minecraft , tripwire String Transparency Yes Luminance No Blast resistance 0 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops String (1) Data values Block dec: 132 hex: 84 bin: 10000100 Item dec: 287 hex: 11F bin: 100011111 Name Block tripwire Item minecraft and ender chests Ender Chest Type Tile Entity Physics No Transparency Yes Luminance 7 Blast resistance 3,000 Hardness 22.5 Tool Renewable Yes Stackable Yes (64) Flammable No First appearances See History Drops Obsidian (8) Block entity id ender_chest minecraft . It also improved enchanting "Flame" redirects here. For the non-solid damage-dealing block, see Fire. “ How does enchanting work in Minecraft? Well, you open a magical book and pick a random spell, not quite sure knowing what it will minecraft and made fighting creepers Creeper Health points 20 () Attack strength Varies by proximity and difficulty. Maximum damage: Normal: 49 ( × 24.5) Charged: 97 ( × 48.5) Size Height: 1.7 Blocks Width: 0.6 Blocks Spawn Light level of minecraft harder.


  • 1.3.1 was a version that held several development-related records, until the development of 1.8.
    • The most snapshots for a major release: 19.
    • The longest development period, from first snapshot to final release: 111 days.
    • The longest wait between major releases, with a release 153 days after the release of 1.2.1 (Later broken by the wait time between 1.8 and 1.9)
  • If the player changed their skin after 1.8 was released, 1.3.1 would be the oldest version to display that skin change. If the player plays on 1.2.5 or older versions they will still see the last skin they used before 1.8.



Launcher Minecraft launcher Current version 2.0.934 Platforms The Minecraft launcher is the login and downloader front-end to the stand-alone client. It is responsible for downloading the main Java packages, including minecraft.jar, which holds the code and minecraft
  • Reduced CPU, RAMRandom access memory & bandwidth usage.
  • Accelerated chunk loading.
  • Decreased lag spike frequency.
  • Made the Nether less laggy.
  • Decreased unnecessary world updates.
  • Made the chat work smoothly even when the server is laggy.
  • Decreased packets sent between client and server.
  • Made singleplayer internally use a multiplayer server.
  • Decreased world saving intervals.
F3 debug screen Java Edition Only Screenshot showing the debug information "Debug" redirects here. For world type, see Debug mode. The debug screen is triggered when the F3 key is pressed. It shows the chunk cache, the memory minecraft
  • Truncated coordinates to 5 fractional digits.
    • For instance, if the player is at X: 11,427,276, instead of the game displaying x: 1.1427276483E7, it will now display x: 11427276.
  • The y-coordinate now shows both the feet level and the eye level.
  • Removed frame rendering time history graph (bottom-left).
  • 3 new values:
    • ws: Walking speed (constant)
    • fs: Flying speed (constant)
    • g: Boolean value, true when you touch the ground
Language files
  • Added tooltips for all types of monster egg blocks and the end portal frame.
  • Added more descriptive tooltips for different types of tree-related blocks, sandstone and stone bricks.
  • Localized server command responses.
  • Added missing commands-related strings.
  • Added missing double chest GUI caption.
Superflat A Superflat world. Superflat (Flat in Pocket Edition) is a world type replacing the normal varied terrain of the Overworld, with customizable layers in the Computer and Console Editions. Contents 1 Structure 2 Access to minecraft world type
  • Respawning in superflat is no longer random.


Creative mode inventory
  • There are categorized tabs for various groups of items and blocks.
  • Added a search tab which will automatically be switched to when the chat key is hit.
  • Added survival inventory tab, which shows the full inventory, a `Destroy item` slot, armor slots including a preview of your character and a 2⃗2 crafting field.
  • Items can now be deleted from the inventory by shift-clicking them.
  • Added layered snow block, monster egg Blocks (Silverfish spawning blocks), Ender Portal frame and all potions.
  • Now shows potion effects` timers like in Survival.
  • You now spawn with an empty inventory in Creative mode.
Experience collection
  • Depending on ore type, experience now drops from ores that drop items.
  • Taking smelted items out of furnaces gives experience now.
  • Destroying mob spawners gives experience now.
  • Adjusted experience level progression:
    • Levels 1-15 cost 17 XP points each
    • Levels 16-30 cost 3 more XP points than the previous (cost = 17 + (level - 15) * 3)
    • Levels 31-8 cost 7 more XP points than the previous (cost = 62 + (level - 30) * 7)
Commands Contents 1 Usage 1.1 Tilde notation 1.2 Target selectors 1.2.1 Target selector variables 1.2.2 Target selector arguments 1.3 Data tags 1.4 Raw JSON text 1.5 Block/item names 2 Summary of commands 3 List of commands
  • Made server commands more descriptive.
  • /ban
    • Added reason parameter
  • /kick
    • Can now contain " " to force a new line.
  • /tp
    • Can now be used to teleport to specific coordinates.
Multiplayer See the multiplayer experience in Minecraft. For the multiplayer software, see Server. PvP (Player versus Player) on a multiplayer server. Multiplayer is the server-based version of Minecraft that enables multiple players to minecraft
  • Added option to let LAN friends join SP games
    • You can choose which gamemode players join in and whether they are allowed to use cheats.
  • Made entities less likely to glitch through blocks.
  • Added automagical downloading of standard sized texture packs when joining servers.
  • Blocks other players are mining now show cracks.
  • Made server list re-orderable: shift+click or shift+arrow keys move selected servers.
  • Server list now scans for LAN servers.
  • Added hardcore difficulty: Players are banned upon death.
  • Connections are now encrypted to prevent eavesdropping.
  • Added SRV Record Lookup support
    • Different subdomains of one domain can handle different servers via different port numbers.
    • Service name should be “minecraft"; i.e. “_minecraft._tcp.example.com".
Added & changed many minor things
  • Individual, stackable items near each other on the ground now become one item stack.
  • Added shift clicking support to armor slots, brewing stands & enchantment tables.
  • Made the stars smaller and brighter.
  • Removed the downwards knockback while drowning.
  • The “Mojang" splash screen when opening the game appears for 1 instead of 3 seconds now.
  • The sky color in the End changed.
  • Blocks now show cracks when destroying them while the GUI is hidden.
  • You can now fall 4 blocks without getting hurt (might be a bug as there exist other, higher distances that don`t cause damage either).
Pick Block key

World Generation

Extreme hills biomes
  • Now generate with emerald ore.
  • Occurs up to 8 times per chunk in veins of 1.
  • Generates between layers 4 and 31, inclusive.
  • Made sub-biome type mountains like Desert Hills or Ice Mountains taller
Jungle trees
  • Made cocoa beans appear on some small jungle trees

Blocks & Items

  • Can now be placed as tripwire
  • Can now be placed in 3 different directions.
  • Placement works like similar to piston placement.
  • Can be fueled by wooden tools now.
  • Return an empty bucket when using lava buckets as fuel now.
  • Instead of melting in the Nether, it now disappears.
  • Can be obtained using Silk Touch-enchanted gear now.
Glass panes
  • Can be obtained using Silk Touch-enchanted gear now.
Nether portal
  • Leaks into the Overworld now: Depending on difficulty, zombie pigmen rarely spawn in them.
Slabs & stairs
  • Will now be placed upside-down when placed on the upper half of a block`s side.
  • When placed upside down, rails, pressure plates, levers, doors, torches, redstone torches, repeaters, redstone dust and beds can be placed on them - Redstone dust behaves like on glowstone - It transmits power horizontally and upwards, but not downwards. Redstone torches don`t power redstone placed on slabs/stairs above them.
  • Water slowly drips through them when it`s raining.
  • Slowly fill up when it`s raining.
  • Changed texture
  • Can be placed on the underside of blocks.
Wooden pressure plates
  • Now take 2 redstone ticks (4 game ticks) seconds to expand.
  • Depending on difficulty, does different amounts of damage now:
    • Peaceful: no damage
    • Easy: ⃂⋝ less damage
    • Normal: same damage as before
    • Hard: ⃢₅ₓ more damage.
Cocoa beans
  • Retextured item.
  • Can be planted & grown on jungle wood now.
  • Can be grown instantly using bone meal.
  • Give a full hunger point now.
Nether warts
  • Can now be grown in the Overworld and in the End.
  • Changed crafting recipe: 3 pieces of paper and one piece of leather in any shape.
Empty buckets
  • Stack up to 16 now.
  • Stack up to 16 now.
  • Crafting now gives 3 signs instead of 1.
Monster spawners
  • Added NBT tags to further customize spawned mobs.
  • Only changeable using map editors or mods.
  • Are not broken by lilypads anymore, instead they run straight through the lilypad now, breaking and sometimes dropping it.
  • When they crash they can sometimes drop themselves.
  • Are less glitchy and more responsive now.
  • Increased maximum speed.
  • When exiting, players will be moved from the boat.
  • When broken by a player, they drop a boat now.
  • When on rails, they can be accelerated a bit while sitting in them.
  • When exiting, players will be moved from the minecart.
  • Doors being broken by zombies now show their damage.


All mobs
  • Mobs can now spawn on top of all upside down slabs and stairs
  • Drop 1-3 porkchops instead of 0-2.
  • Reduced spawn rate in superflat maps.
  • When suffering from poison potions, they will now spawn more silverfish from nearby silverfish blocks more often.
  • Increased knockback effect.
  • Depending on difficulty, they do more damage now:
    • Easy: ~50% less damage
    • Normal: same damage as before
    • Hard: 33.3⃢₀⅚% more damage.
Creepers & spiders
  • Become aggressive towards the last mob or player that hit them now
Skeletons, creepers Creeper Health points 20 () Attack strength Varies by proximity and difficulty. Maximum damage: Normal: 49 ( × 24.5) Charged: 97 ( × 48.5) Size Height: 1.7 Blocks Width: 0.6 Blocks Spawn Light level of minecraft & zombies
  • Become neutral against players again a few seconds after being hit in Creative.
  • Endermen now stop in front of the player. When the player swings his/her sword, it teleports behind the player.
  • Villagers spawned from spawn eggs will get a random profession now.


41 bugs fixed

  • Fixed texture packs in folders not showing their icon and description
  • Fixed Man-in-the-middle attack allowing hackers to log in as you when you visit their server
  • Fixed the Open texturepack folder button not working on OS X
  • Fixed liquids slowing down flying players.
  • Fixed blocks with the same id but different data/damage values stacking in Creative inventory.
  • Fixed boats & minecarts not being one-hit breakable in Creative.
  • Fixed raw fish, dyes, saddles, potions, milk buckets and tools depleting in Creative.
  • Fixed water destroying non-solid blocks when breaking them from above.
  • Fixed Silk touch giving you only one slab from double slabs.
  • Fixed redstone updates not propagating through unloaded chunks.
  • Fixed repeaters getting stuck when loading their chunk.
  • Fixed tools taking damage when breaking insta-breakable blocks.
  • Fixed a few misalignments in the item sprite sheet.
  • Fixed the arrow representing players on held maps being offset.
  • Fixed being able to duplicate sand, gravel and powered rail.
  • Fixed placing a piston in front of another powered, but not extended one resulting in a glitched piston with the head`s texture on all sides.
  • Fixed TNT dropping as a resource on creative mode.
  • Fixed powering specifically glitched pistons crashing the game.
  • Fixed the End Portal Frame block not showing as a block in the inventory.
  • Fixed weather not working correctly in certain biomes.
  • Fixed Overworld portals above Y=127 not being recognized when leaving the Nether.
  • Fixed various hacked mob spawners crashing the game.
  • Fixed thrown splash potions not preserving their type when reloading the world.

Multiplayer only

  • Fixed arrows scooting up to the top of the block they were shot on.
  • Fixed Endermen not opening their jaws.
  • Fixed fully charged arrows not showing their particle effect.
  • Fixed many sounds not playing.
  • Fixed magma cubes` and slimes` jumping animations not showing.
  • Fixed thunderstorms not darkening the sky.
  • Fixed weather not fading in or out.
  • Fixed enchanted armor and tools not glowing to other players.
  • Fixed explosions not pushing players back.
  • Fixed TNT not knocking back players.
  • Fixed pistons not pushing back players.
  • Fixed players on minecarts, boats or pigs and spider jockeys not being displayed in the correct location.
  • Fixed glitchy mob prediction.
  • Fixed fishing lines not showing.
  • Fixed sneaking players` nameplates not staying hidden when loading the chunks they are in.
  • Fixed Unbreaking-enchanted tools sometimes breaking and then re-appearing a few times.
  • Fixed potion effects losing their graphical effects when traveling between dimensions.
  • Fixed blocks disappearing when placing them under yourself and jumping.

Further revisions

  • 1.3.2 brought sideways logs on large oak trees and a few bug fixes.