Trust me, this will wake up the entire retro numberblocks fandom in one day. Retrillions is a name I made up to combine Million, Billion Trillion, etc. with Retro. I don't know why I did that, but it sounded cool to me.
I used Beepbox to make the instruments. Credit to all. I created the Retro Numberblocks, but not Numberblocks itself.
