Java Edition:Beta 1.6 Test Build 3 Debug Chests

In Beta 1.6 Test Build 3, upon creation of the world, 11 debug chests would be created that contain two 64 stacks of every block, as well as a stack of the maximum stack of every item in the game at this point. Most of the items are obtainable through normal means, however some blocks present aren't obtainable in item form, making them discontinued. Most of these kinds of items were deleted in 13w37a, but some items from these chests are able to be brought into the current versions.

Obtaining

Unlike other structures, chunk regeneration can't be used to obtain debug chests. The game only generates debug chests when going through the "Create New World" dialog. It also may not appear that all 11 chests generated upon loading a new world, but the missing chests are instead placed at y=0 for unknown reasons, replacing the bedrock there. It is very likely that one will need to use Unbreakable Block Removal Methods to access them.

Creating a New World in Beta 1.6 Test Build 3

Set of debug chests generated in a new world

The easiest method to obtain these items is to just create a new world from scratch. This will result in the chests generating at spawn, allowing access to all the debug items.

Older Worlds

If you want to create these chests in older worlds, then level.dat regeneration must be used, which some may consider cheating. It is highly recommended to first empty your inventory into a chest before performing this, as this will delete the player's inventory. This can also change many things, including the world seed (if none was set during creation of the new world) and the spawn point.