Java Edition 13w36a

13w36a is the first snapshot released for 1.7.2.

This version was removed from the launcher for quite a bit, then it was added back in September 2018.

Additions

 * New Biomes
 * Mesa (also known as Clay Canyon or "Disco Mountains")
 * Composed of multiple colored hardened clay.
 * Dead bushes spawn in this biome.
 * Mega Taiga (also known as Redwood Forest)
 * Contains 2x2 Spruce trees.
 * Has a dirt block variant known as Podzol.
 * Currently obtained only by the silk touch enchantment.
 * Contains dirt blocks that do not allow grass to grow.
 * Moss Stone "boulders" are scattered around in this biome.
 * Dead Bushes, Mushrooms, and Ferns spawn in this biome.
 * Cold Beach
 * Ice Plains Spikes
 * Contains giant ice spikes similar to upside down icicles made of Packed Ice.
 * Stone Beach (also known as Cliff)
 * Mainly consists of stone.
 * Like steep hills, not completely vertical.
 * Savanna
 * Curved Acacia Trees.
 * Along with plains, the Savanna is one of the two biomes where horses now spawn naturally.
 * NPC Villages may generate in savanna biomes.
 * After being removed in Beta 1.8
 * Roofed Forest (also known as Black Forest)
 * Has dark grass and giant mushrooms with 2x2 dark oak trees.
 * Has extremely dense trees and leaves; dark and dangerous under the canopy even during the day.
 * Monsters will most likely be able to spawn during the day and the night.
 * This is the first biome aside from the Mushroom Island that naturally spawns with huge mushrooms.
 * Birch Forest
 * A forest made of birch trees.
 * Sunflower Plains
 * Exactly the same as Plains, but can spawn Sunflowers.
 * Flower Forest
 * Forest variant with several of the new flowers, including peonies, orange tulips, white tulips, oxeye daisies, rose bush and allium.
 * Deep Ocean
 * Is about ten blocks deeper than normal oceans, the maximum depth is low 20s, but may reach bedrock.
 * Extreme Hills+
 * Contains spruce trees.
 * Taiga
 * Non-snowy taiga variation. The old taiga biome is now called Cold Taiga.
 * Biome Variants
 * M - Biomes with an M variant are much rarer than any other variant.
 * Extreme Hills M, Taiga M, Roofed Forest M, Extreme Hills+ M, Savanna M Mesa Plateau M and Mesa Plateau F M are more mountainous versions of their normal biome.
 * Desert M has patches of water unlike normal deserts.
 * Birch Forest M has taller birch trees than usual.
 * Swampland M, Jungle M, JungleEdge M, Birch Forest Hills M, Cold Taiga M and Savanna Plateau M are other rare biome variants.
 * Plateau - Biomes with a Plateau variant are like the hills biome variants, but flattened at the top.
 * Savanna Plateau and Mesa Plateau are both plateaus.
 * Hills - More hills variants are added to fit with the new biomes.
 * Birch Forest Hills, Cold Taiga Hills and Mega Taiga Hills can now be generated.
 * New AMPLIFIED world type.
 * Requires a powerful computer to run well.
 * Mountains in this world type can reach up to Y: 256.
 * Gravel beaches
 * Most biomes have uncommon/rare variations.
 * New Taiga biome without snow.
 * Extreme Hills+ variation that has spruce trees.
 * New 'M' biome variants: Savanna M, Desert M, Roofed Forest M and Extreme Hills+ M.
 * Snow now generates depending on altitude, with noise variation.
 * Biome dependent.
 * New enchantments for Fishing Rods that can change your luck when fishing.
 * Lure - increases chance of catching fish.
 * Luck of the Sea - increases chance of getting treasure.
 * New fish.
 * Pufferfish
 * Will poison you, give you nausea, and give you hunger if eaten.
 * Used to brew a potion of water breathing.
 * Raw Salmon
 * Can be cooked and eaten.
 * Clownfish
 * New particle effects
 * Fishing now has many different particle effects
 * Bubbles will show up moving towards your bobber just before you have something on your hook. This has the appearance of a fish swimming towards the hook.
 * Falling now has particle effects
 * Particle size depends on distance fallen.
 * Multiple enchantments in an Enchanted Book, when combined with a tool using an Anvil, give enchantments according to the tool.
 * Zombies and Skeletons can now spawn with and drop armor, bows and swords enchanted with the Unbreaking Enchantment.


 * New ground covers
 * Podzol
 * New dirt variation
 * Grass can't spread on it.
 * Can be harvested using Silk Touch tools.
 * Only found in Mega Taiga Biomes
 * Grassless dirt
 * Grass cannot grow on it
 * Block ID is 3:1
 * Only obtainable through
 * Packed ice
 * When broken, does not turn to water like normal ice blocks do
 * Does not melt
 * Opaque, rather than translucent like normal ice
 * Torches and redstone can be placed on it
 * New Flowers
 * Red, Orange, White and Pink Tulips
 * Can be crafted to Red, Orange, Light Gray, and Pink Dyes, respectively
 * Blue Orchid
 * Can be crafted to Light Blue Dye
 * Allium
 * Can be crafted to Magenta Dye
 * Azure Bluet
 * Can be crafted to Light Gray Dye
 * Oxeye Daisy
 * Can be crafted to Light Gray Dye
 * Poppy replaced Rose
 * Iron Golems now drop poppies instead of roses
 * Two-block-tall Flowers
 * Applying bone meal to them causes them to dispense a flower item that can be collected. Therefore, all two-block-tall flowers are renewable.
 * Sunflowers
 * Typically face East
 * Can be grown, unlike Roses and Dandelions
 * Can be crafted into 2 Yellow Dye
 * Pink Peonies, called Peony
 * Can be crafted into 2 Pink Dye
 * Rose bush
 * Can be crafted into 2 Red Dye
 * Lilac
 * Can be crafted into 2 Magenta Dye
 * Two-block-tall grass
 * Double Tall grass
 * Can be made by applying Bone meal to Tall grass.
 * Large Fern
 * Can be made by applying Bone meal to Fern.
 * 3 new variants of Monster Egg
 * Mossy Stone Brick, Cracked Stone Brick and Chiseled Stone Brick
 * New /summon command to spawn entities
 * Usage:

Changes

 * The ability to select multiple resource packs at once.
 * Resource packs at the top take precedence over those below.
 * Allows for non-manual merging of textures from multiple packs, a sound pack and a different texture pack, etc.
 * Flint and Steel is now a shapeless recipe.
 * A Creeper will explode after igniting it with a flint and steel.
 * Several lighting issues fixed.
 * A lot fewer "black spots" in the terrain generator.
 * Torch bugs in strongholds and mineshafts have been fixed.
 * Rewrite of several option screens.
 * A completely new options menu.
 * A new "Select Resource Pack" menu.
 * Rewrote Key Config.
 * Function and sprint keys can be changed.
 * By default, sprinting can be activated by holding down the left control key. In Creative mode, this can also be done while flying.
 * The original sprinting controls (double-tap forward or double-tap backward while holding down forward) still function.
 * Smooth mouse, formerly available by pressing F8, will now use F4 by default.
 * The volume of in game music, Jukebox and Note Block music, hostile mobs, passive mobs, players, weather, blocks/environment, and the master volume can now all be modified separately.
 * Written Books can now be cloned the same way maps can, but by using Book and Quills instead of Empty Maps
 * Can clone multiple copies of the same Written Book by putting more Book and Quills in the crafting grid
 * Item Frames
 * Now drop the item inside them when punched, then drop themselves if they are punched when empty
 * Will display the name of the item they hold (if it is custom named) when looked at up close
 * Sugar Cane changes color depending on biome (Texture is unchanged, adding biome color makes it appear different)
 * Rewrite of the achievements and statistics system
 * Now ties in with the scoreboard system - added 744 new objective criteria that were previously tracked with statistics and achievements
 * Are now per world/server
 * Achievements screen can now be zoomed in and out using the mouse wheel.
 * Achievements don't appear on the achievements screen if more than five achievements need to be achieved first (i.e. "DIAMONDS!" doesn't appear until "Getting Wood" is achieved).
 * Data for a block, item, or mob doesn't appear in their respective tab in the Statistics screen unless the player has crafted/placed/mined that block, crafted/used/depleted that item, or killed/was killed by that mob.
 * New achievements: Repopulation, Adventuring Time, The Beginning?, The Beginning., and Beaconator
 * New statistics: Distance by Horse, Junk Fished, and Treasure Fished
 * New scoreboard functions
 * Can now use statistics to create objectives; anything that statistics can track can be used as an objective (can also track achievements)
 * This is the reason why statistics/achievements were changed to be stored per world/server
 * The /give command can now give items to players with custom names and lore
 * It can also give enchanted items.
 * Example: /give  {display:{Name:"",Lore:["",""]},ench:[0:{id: ,lvl: }]}
 * It can also give items with custom NBT tags, such as SkullOwner to obtain the Head of a specific player
 * This removes the necessity to use an NBT editing program to obtain these items.
 * Attribute modifiers have been added to the /give command (not completely investigated as of yet).
 * Example: To give a diamond sword with +50 Attack Damage to the nearest player, use the command /give @p 276 1 0 {AttributeModifiers:[0:{AttributeName:"generic.attackDamage",Name:"generic.attackDamage",Amount:50,Operation:0,UUIDLeast:894654,UUIDMost:2872}]}
 * This enables the possibility of additional attributes to items using commands without the use of an NBT editing program.
 * Command blocks now show what command it ran recently.
 * The /time set day command now sets the time to 1000 instead of 0
 * Increased fog distance
 * Weighted Pressure Plates now output a signal relative to the amount of entities on them, always starting at 1 signal strength if any entities are present
 * For Light Weighted Pressure Plates, every entity adds 1 strength to the signal
 * For Heavy Weighted Pressure Plates, starting at 1, every 10 entities adds 1 strength to the signal (Example: 11 entities increases signal strength to 2)
 * Improved fishing
 * Changes to fishing mechanics
 * More rewards: some good, some bad
 * Treasure: 6 items total, including enchanted fishing rods, enchanted bow, enchanted books, name tags, lily pads, saddles
 * Junk: 13 items total, including damaged fishing rods, Water Bottles, rotten flesh, string, leather, bowls, sticks, bones, tripwire hooks, ten stacked Ink Sacs, or damaged leather boots
 * Melons now generate in Jungles
 * Rivers have gravel patches and the Deep Ocean (a new biome variant) bottom is covered with it
 * Changes to oceans
 * Oceans are smaller and take up much less of the map
 * Changes to Taiga
 * Taiga biomes no longer receive snowfall below y=120.
 * Changes to Swampland
 * Grass is greener and fluctuates more in color, depending on biome temperature.
 * In shallower parts, the coast is covered in staggered dirt blocks.
 * Changes to Extreme Hills
 * Generation tends to include more flat areas, and more extreme mountainous regions.
 * Stone is generated more frequently than in the previous versions, even outside of Extreme Hills+ Biomes.
 * Biomes have been put into four main categories
 * Snow-covered
 * Cold
 * Medium
 * Dry/warm
 * Biomes will attempt to avoid getting placed next to a biome that is too different to itself
 * Changed the display item for the Decoration Blocks tab in the Creative mode inventory from the Rose to the new Peony flower
 * Tall grass, ferns, double tall grass, and large ferns display their coloring from foliage.png
 * Flowers are now flammable.
 * Flowers will not be placed dead center on a block, but have certain variations in which they are placed.
 * Dead Bushes can now be placed on Hardened Clay and Stained Clay.

Reupload
13w36a was reuploaded on September 6, 2013, to fix a variety of bugs.


 * Fixed weird language selection
 * Attempt to fix Mesa biomes, but the fix did not work.
 * Fixed names of Grass Block and Dirt

Trivia

 * Until 15w31a, 13w36a held the record as having the most content in one developmental release, having as much content in it as the Pretty Scary Update had in its full release.