Stuart Fails to Save the Universe continues with episode 3, which premieres on Thursday, August 6, 2026, on HBO Max in the United States. When does Stuart Fails to Save the Universe episode 3 come out? AdA brief recap of Stuart Fails to Save the Universe episode 2The second episode of Stuart Fails to Save the Universe begins in a seemingly peaceful planet. AdMajor events to expect from Stuart Fails to Save the Universe episode 3The magical universe presents the next obstacle for the gang. AdStuart Fails to Save the Universe episode 3 premieres on Thursday, August 6, 2026, exclusively on HBO Max.