BOXBOXBOY! for the Nintendo 3DS was James' 19th Let's Play. The series ran from May 2nd, 2017 to May 26th, 2017.
You can watch the series from the beginning by clicking here.
"Qbby is back... WITH DOUBLE THE BOX MAKING POWER!"
- The series icon featured above was created to match the current "JR" design, as with every series prior to Kirby: Planet Robobot