Behind The Scenes (BTS) with Smosh was a side series on the Smosh channel. It featured Behind The Scenes footage, bloopers, deleted/extended/alternative scenes and more. It started with My Mutant Rash and was first posted on YouTube for Smosh vs Zombies!, being posted on Sundays. It was updated in 2017 and changed to This Week in Smosh which does behind the scenes footage for multiple videos instead of just a single video. On April 28, 2017 a new animation and music was debuted for the BTS.