In Minecraft, some things are simply impossible without commands. Other things are made easier through commands, but not everything a command does can be done organically.

As mentioned previously, a command block is used to execute certain commands in a world automatically without players manually typing them in the chat box.

The command block is an orangey-red cube with TV sci-fi LEDs stuck to it. As part of a redstone circuit, it can be used to execute specific commands, like granting experience to a player.