Can someone tell me what a Chain Command Block is?

I was reading about it but it was not that clear, for what can I use it?

  • 5
    This is the exact opposite of "do basic research before asking". Dec 22, 2017 at 21:28
  • I just didn’t understand what it is, thats the reason of my question.. Dec 23, 2017 at 8:18
  • Then why don't you just google "chain command block"? The first result is the Minecraft wiki describing it in every detail. Dec 23, 2017 at 10:30
  • 1
    I did first but it wasn't clear to me Dec 23, 2017 at 10:37
  • 1
    Then you should say that and ask about the specific part that you didn't understand. And the best place to do that would be the discussion page for that wiki page. Dec 23, 2017 at 13:39

1 Answer 1


From the Minecraft Wiki's Command Block page:

If any command block faces a chain command block (a command block in "Chain" mode) when activated, it will notify the chain command block to also attempt execution. The chain command block will only execute its command if activated and, if in "Conditional" mode, if the command block behind it executed successfully (behind in the sense of the direction it is facing, not in the sense of which command block chained to it). Whether or not the chain command block is activated or executes successfully, if it is facing another chain command block, it will notify it to attempt execution as well.

Chained command blocks execute in the same game tick in the order they are chained. Chained execution cannot be passed to a command block which has already executed in that game tick (loops execute only once).

Basically, this means chain command blocks are activated when a block pointing into it is activated (or if the chain command block is in conditional mode, only if the other command block's command ran successfully).

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