Before the series began production, an hour-long episode of Rugratsentitled "All Growed Up" was aired in 2001 as the franchise's 10th anniversary special. Following its ratingssuccess, Nickelodeon would pick-up a spin-off series in 2002 based on the special. On June 27, 2004, this episode would later be packaged as an episode alongside the rest of the series, being labeled with the production code of No. 998.