13.9.14.5.3.18.1.6.20

Riddle: I exist, but have no material form. I am made of numbers, but appear square. I build upon other of my own, but do not topple down. I sit still and do nothing, but I'm still useful. What am I?

Answer: Minecraft Blocks.

Source: https://www.riddles.com/2759

I exist, but have no material form. I am made of numbers, but appear square. I build upon other of my own, but do not topple down. I sit still and do nothing, but I'm still useful. What am I? — 13.9.14.5.3.18.1.6.20 by Dan Riddles v1.

Riddle: I exist, but have no material form. I am made of numbers, but appear square. I build upon other of my own, but do not topple down. I sit still and do nothing, but I'm still useful. What am I? Answer: Minecraft Blocks. — by Dan Riddles v2.