Hercules (November 17, 2000). "Hercules meets Tim Sweeney". Interactive Fantasies. Archived from the original on August 24, 2017. Retrieved March 28, 2018.
Edwards, Benj (September 3, 2007). "Great Moments in Shareware: ZZT". Vintage Computing and Gaming. Archived from the original on December 28, 2021. Retrieved December 28, 2021.
Hercules (November 17, 2000). "Hercules meets Tim Sweeney". Interactive Fantasies. Archived from the original on August 24, 2017. Retrieved March 28, 2018.
Bovelander, Wouter (May 25, 1999). "Tim Sweeney -- interview". Planet ZZT++. Archived from the original on October 11, 2000. Retrieved December 3, 2021.
Dr. Dos (February 15, 2021). "The Epic Mega Haul". Museum of ZZT. Archived from the original on December 13, 2021. Retrieved December 13, 2021.
Edwards, Benj (September 3, 2007). "Great Moments in Shareware: ZZT". Vintage Computing and Gaming. Archived from the original on December 28, 2021. Retrieved December 28, 2021.
Bovelander, Wouter (May 25, 1999). "Tim Sweeney -- interview". Planet ZZT++. Archived from the original on October 11, 2000. Retrieved December 3, 2021.