In Minecraft Pocket Edition, there's an unused camera. If hacked into the player's inventory, it can be used to take pictures.

Villagers were inspired by the shop keepers in Dungeon Master 2.

Lightning does not have an image file associated with it. It is coded directly into the game engine.

The Snow Golems don't actually have pumpkin heads. They simply wear them as a helmet and their actual faces can be seen by standing in very close proximity to them so that you see through the pumpkin. Shears can be used to remove the pumpkin and cause one to drop it revealing its face, although the pumpkin cannot be put back on the Snow Golem.

There's a very rare chance that the "C" and "E" in the Minecraft logo will switch and instead show "Minceraft".

Emeralds were originally supposed to be rubies, but they were changed to emeralds due to Dinnerbone (Nathan Adams) being color-blind, making him not able to easily tell the difference between redstone ore and ruby ore.

A block known as Crying Obsidian was originally planned as a way for the player to set a new respawn point, but was abandoned and removed from the game after the release of beds.

One achievement in Minecraft is called "The Lie", which includes making a cake. This is a nod to Portal's famous meme, "The Cake Is A Lie". Also, the achievement for entering the nether in the PC version is called "We Need To Go Deeper", which is a reference of the multi-layered dream based plot of "Inception".

When Soul Sand is directly placed over an ice block, its slow effect is greatly increased, affecting both mobs and players.

"Herobrine Removed" has been added to a number changelogs. Herobrine is a character from a Minecraft "creepypasta" who looks exactly like the player, but has white eyes. It is said that Herobrine is Notch's dead brother, although Notch said himself that he does not have a dead brother. Herobrine never appeared in the game, and it's likely that this line being added to the changelogs is just a joke with the community.

Steve once had a beard, but it was removed in the beta update.

The in-game NPC Villagers, often referred to as Testificates, were originally planned to be Pigmen, much like the Nether mobs. (Except not undead.) They would have the standard player model like Zombies and Zombie Pigmen, but with a Pig's skin. The second Skin Pack for the Xbox 360 version contains a Pigman skin as a slight nod to this.

Originally, zombies used to drop feathers when killed. This was the result of Notch, the developer of Minecraft at the time, not knowing what zombies should drop.

The Creepers were based on a failed model of a pig. The length and the height of the pig model were accidentally inverted, resulting in a tall mid section with small legs.

When enchanting an item, the strange symbols used to describe the kind of enchantment is actually a direct usage of the Standard Galactic Alphabet from the Commander Keen series for DOS.

The texts respectively read "Well Played Internets You Are Good", "These Names Will Be Random And Confusing" and "Each Spell Costs Experience Levels" describing the function of the enchantment table.

Notch intended to include a "Sky Dimension", which would be the polar opposite of the Nether. It was to be included in the Beta 1.8 Adventure Update. Players would have been able to enter a world made up of floating formations once they slept in a bed. However, Notch delayed this new area until he could make the Nether more interesting. Eventually, the Sky Dimension was converted into the End, though the Sky Dimension was unintentionally able to be accessed in Beta 1.6 and 1.7.

If you delete the file 'splash.txt' without deleting the META-INF folder, the splash text on the title screen will say 'missingno'. This is a reference to the infamous Glitch Pokémon, MissingNo.

The texture of the Zombie Pigman has "thx xaphobia" written on it as a credit by Notch to the skin's original creator, XaPhobia.

In the TU12 world of the Xbox 360 version of the game, it's possible to find a pyramid. Inside is a tower of 4 gold blocks placed on an obsidian block. This is a reference to Rooster Teeth's series "Let's Play", where each week 7 guys play different challenges in Minecraft: Xbox 360 Edition to win a golden tower they call the "Tower of Pimps".

There are four unused paintings in the pocket edition. Information on who drew these paintings, and their purpose, is unknown.