The hacked undefined block was fixed in scratch 3.0. But you can get it in Discuss Scratch By changing a random block into an unknown block like this one!:

when ⯃ clicked

Is the undefined block an unused Scratch Block? It is used in Discuss Scratch.

Blocks that didn't exist in Scratch 2.0 automatically turn red.

You can make one by making a custom block and press backspace on the define block

TsengGames wrote:

You can make one by making a custom block and press backspace on the define block

Kind of reminds me of this:



You can get this using the same trick as the undefined hat block.
Anyway, I guess it's like.. kinda a half block?

medians wrote:

TsengGames wrote:

You can make one by making a custom block and press backspace on the define block

Kind of reminds me of this:



You can get this using the same trick as the undefined hat block.
Anyway, I guess it's like.. kinda a half block?

Hmm… A block like this? Wow.