"Minecraft" is a game that prides itself on being very much customizable, but users recently have pushed the limits of what you can create inside the program.

According to a report from Sky News, "Minecraft" users have created a pair of functioning hard drives that can read and write data. The first hard drive can store up to 1KB of data, while the second unit can hold up to 4KB of data.

They are sustained in the game by a "Minecraft" mod called redstone, which operates within the constraints of known logic. This means that users have the ability to create complex circuits in the game.

To create the hard drives, redstone was used to power pistons that simulate the true and false values of binary.

Cody Littley, who is working on his Ph.D in computer science, built the smaller of the two hard drives.

"Data can be anything," he said. "It could be some text of a picture. You could, in theory store the schematics for something. Internally, Minecraft stores the contents of your inventory with a little bit of data.

Littley pointed out that 1KB is a tiny amount of data. It would take more than 4 million KB to have the same amount of storage as a 4GB hard drive.

"Any time you download a file from the internet, you probably notice that there is a size in kilobytes or megabytes or gigabytes," he said. "This is data. "Choose any file from the internet, as long as it is 1KB or smaller, and you could store it on this hard drive."

In other "Minecraft" news, the PlayStation 4 version of the game failed Sony's certification test and now 4J Studios will have to fix the outstanding issues and resubmit the game, according to Gamespot.

"Sony found some issues we have to fix in their final test of Minecraft PS4," 4J Studios tweeted. "We're fixing, but we need to go through the process again."

4J submitted the game to Sony last week for approval and plans to release the game this month, although that could be in question after Sony's rejection. 4J is also in progress on the PlayStation Vita and Xbox One version of the game.