It's "gamefied" vimtutor... Also, he must have learned a tonne of vim building the game. Though, I totally agree with you, haven't seen anything that beats vim

It's "gamefied" vimtutor... Also, he must have learned a tonne of vim building the game. Though, I totally agree with you, haven't seen anything that beats vimtutor, except maybe for a vim cheatsheet as reference material.