Nick said the series -- for which it has ordered 20 more episodes -- was the top show for Nick at Nite in the third quarter, averaging 2.1 million viewers.
The show is the first TV series from Eisner's Tornante Animation, launched in the summer of 2008.
The series follows the Martin family as they cross America in an RV and end up in some curious situations. Kevin Nealon provides one of the voices.
"An irreverent twist on the classic family sitcom," states Marjorie Cohn, a Nick executive vice president.
The series is among other new additions to Nick at Nite that include comedies "Everybody Hates Chris" and "Malcolm in the Middle."