Adams, Dan; Steve Butts; Charles Onyett (March 16, 2007). "Top 25 PC Games of All Time". IGN. Archived from the original on March 19, 2007. Retrieved August 7, 2009.
Ocampo, Jason; Steve Butts; Jeff Haynes (August 6, 2009). "Top 25 PC Games of All Time". IGN. Archived from the original on October 4, 2010. Retrieved August 7, 2009.
Adams, Dan; Steve Butts; Charles Onyett (March 16, 2007). "Top 25 PC Games of All Time". IGN. Archived from the original on March 19, 2007. Retrieved August 7, 2009.
Ocampo, Jason; Steve Butts; Jeff Haynes (August 6, 2009). "Top 25 PC Games of All Time". IGN. Archived from the original on October 4, 2010. Retrieved August 7, 2009.