I had a similar idea which was also based on an analogy with video games (where the analogy came from let's play videos rather than speedruns), and called it a live math video.

NaiveTortoise's Short Form Feed

by NaiveTortoise 1 min read11th Aug 201885 comments

In light of reading Hazard's Shortform Feed -- which I really enjoy -- based on Raemon's Shortform feed, I'm making my own. There be thoughts here. Hopefully, this will also get me posting more.