Big Bang Theory's Major Return In Stuart Fails To Save The Universe Explained By Creators

Published Sep 25, 2026, 11:42 AM EDT

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Warning: This article contains spoilers for Stuart Fails to Save the Universe, season 1, episode 10, "Spoiler: Filmed Before a Live Studio Audience."

The creators of Stuart Fails to Save the Universe have explained why the series' finale returned to The Big Bang Theory's stage.

Now that the finale has aired, the show has left many questions that Stuart Fails to Save the Universe season 2 could answer. However, the series' creators have just addressed a major aspect of the final episode: how and why the show returned to the stage where The Big Bang Theory was filmed.

During the final moments of Stuart Fails to Save the Universe season 1, its four core characters suddenly find themselves on the comic book store set made famous by The Big Bang Theory.

During a Deadline interview, the show's creators, Chuck Lorre, Zak Penn, and Bill Prady, were asked where they got the idea to make that happen and whether that moment was designed to pay homage to the franchise's original series. In response, Penn and Lorre explained why they chose to bring the show back to The Big Bang Theory's stage. Check out Penn and Lorre's comments below:

"Penn: Yeah, that was definitely part of it. These guys [Lorre and Prady] have a lot to say about it, so it was pretty fertile ground. I don’t think we said at the beginning of the season, we must comment on the sitcom, that wasn’t a goal.

Lorre: If our characters on their adventure, on their journey, could be trapped into a comic book, they could certainly be trapped into a sitcom. I mean, we’ve gone past any boundaries of rationale, and this is a spectacularly cool thing to do, let’s do it. Can we explain it? We’re gonna try, we’re certainly going to try."

As Stuart Fails to Save the Universe reviews have noted, the series is by far the boldest The Big Bang Theory spin-off. That grand scope forced the production team behind it to put in a lot of work to bring the finale's meta moment to life.

Deadline's article confirmed that the Stuart Fails to Save the Universe sitcom scenes were filmed outside Stage 25 on the Warner Bros. lot, where The Big Bang Theory was produced. While that may make it seem like the comic book store set seen in the finale was the same one from the original show, Prady told the outlet that wasn't the case. Instead, they had to recreate it twice so they could film scenes in the style of a classic sitcom and in the single-camera format Stuart Fails to Save the Universe uses.

"Prady: We didn’t use the original sets, but you’re right, we had to build. The only way to do this, because a multi-cam set looks different than a single-cam set, is we had to build the set two times. We had our single-cam comic book store that we’ve been using all season with four walls and a ceiling, and on the next stage over at Universal, they built the multi-cam version of that set and the multi-cam version of the stockroom.

But they also had to build the interior of a multi-cam soundstage, they had to build audience risers, the sound booth and the lighting booth that sits behind the audience, the camera alley, all of those features of multi-cam stage, they had to build. Our amazing production team actually went over to Georgie and Mandy, which was in production at the time, so that they could copy it and get it right. And it was also a change for the director of photography.

The camera moves in multi-cam are completely different, the cameras go onto dollies, you have dolly moves that don’t exist in single-cam, and all of that had to be duplicated. So it was a pretty, pretty complicated task."

Based on the comments all three creators made, it is clear that returning to the sitcom world of The Big Bang Theory required an immense amount of ambition and work. Fortunately for the team behind the HBO Max comedy, it appears that the experience was rewarding. Later in the Deadline interview, Lorre stated that when they filmed the season's final moments outside of the soundstage, it was a "fun night."

Just as importantly, showing the world of The Big Bang Theory franchise in a new light has quickly become one of Stuart Fails to Save the Universe's biggest highlights. After the series' first 10 episodes featured a slew of actor cameos and even a return to the stage where it all started, it will be fascinating to see what season 2 will do next.

Stuart Fails to Save the Universe is slated to premiere sometime in Fall 2027.