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A Gear was a block that was leaked and was supposed to be added to Indev, but was never added. Gears were first seen at this point of this video, being placed onto the wall of a cliff. A Gear's sprite consisted of two parts; the center rod and the animated gear.

Gears could only be placed on a side of a block, placing them in a space where two sides are next to each other would cause two Gears to appear on both sides. Gears did not do anything and could not be obtained without hacking one's inventory. Placed Gears were impossible to destroy; any mining directed at a Gear phased through to the block behind it, much like Water. If the block a Gear was on was destroyed, the Gear was not removed, but oddly, invisible. The Gear still existed in the map and would show up again if the block was replaced. Gears placed in mid-air using a map editor were also invisible and would show up if a block was placed next to them. Gears can be only removed using water to flow on them. Gears do not show up on non-solid blocks.

Gears were deemed removed from the game when their data value was taken by Redstone Dust and their sprites deleted from Minecraft's files. It is unknown what gears' real purpose was, and will never be known due to them being removed. Before Indev was removed, it was still possible to hack in Gears and place them. It is impossible in all recent versions to obtain gears or see them first-hand.

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