Stuart Fails to Save the Universe

On April 12, 2023, it was announced that an untitled The Big Bang Theory spin-off was in early development at Max, created by The Big Bang Theory co-creator and executive producer, Chuck Lorre. The spin-off series was formally announced at the 2023 Warner Bros. Discovery upfront presentation by HBO and Max CEO and chairman, Casey Bloys. Bloys did not mention any plot details or who the series would focus on from The Big Bang Theory series, but it was reported that the series would have a new cast, with former The Big Bang Theory cast members to appear in guest roles.

On the review aggregator website Rotten Tomatoes, the series holds an approval rating of 78%, based on 43 reviews, with an average of rated reviews of 6.8/10. The website's critics consensus reads, "Stuart Fails to Save the Universe manages to brighten up its franchise through a genre-bending all-things-go sitcom that has the comedic chops to satisfy." Metacritic, which uses a weighted average, assigned a score of 62 out of 100 based on 19 critics, indicating "generally favorable" reviews.