南方公园试播集 is the original version of "Cartman Gets an Anal Probe", with about four minutes of extra footage. While this version never aired on television, it was released onto DVD in 2003 via The Complete Second Season. It was made in the summer of 1996 and completed in November.
The Unaired Pilot had a few more scenes than "Cartman Gets an Anal Probe", including:
- A scene on the playground with the 5th graders.
- A scene in the nurse's office.
- A scene showing Cartman's whole family, including his father and sister.
- At the end of the episode; Kenny comes back to life, Cartman falls back down to earth (but doesn't have pink eye) and Pip appears once again.
- At the end of the episode, the aliens barbeque the cows.