Varney, Allen. «Feelies». Archivado desde el original el 12 de octubre de 2007. Consultado el 24 de septiembre de 2006.
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Sweeny, Tim (2007). «Next-Gen podcast». Next Generation Magazine podcast. Archivado desde el original el 14 de mayo de 2013. Consultado el 23 de febrero de 2012. «We've been developing games that are community-based for more than ten years now, ever since the original Unreal and Unreal Tournament. We've had games that have had free online gameplay, free server lists, and in 2003 we shipped a game with in-game voice support, and a lot of features that gamers have now come to expect on the PC platform. A lot of these things are now features that Microsoft is planning to charge for.»
«Player 3 Stage 6: The Great Videogame Crash». 7 de abril de 1999. Archivado desde el original el 5 de enero de 2013. Consultado el 16 de agosto de 2006. «"The third member of the deadly troika that lays the videogame industry low is the home computer boom currently in full swing by 1984».
«Player 3 Stage 6: The Great Videogame Crash». 7 de abril de 1999. Archivado desde el original el 5 de enero de 2013. Consultado el 16 de agosto de 2006. «"The third member of the deadly troika that lays the videogame industry low is the home computer boom currently in full swing by 1984».
Varney, Allen. «Feelies». Archivado desde el original el 12 de octubre de 2007. Consultado el 24 de septiembre de 2006.
Sweeny, Tim (2007). «Next-Gen podcast». Next Generation Magazine podcast. Archivado desde el original el 14 de mayo de 2013. Consultado el 23 de febrero de 2012. «We've been developing games that are community-based for more than ten years now, ever since the original Unreal and Unreal Tournament. We've had games that have had free online gameplay, free server lists, and in 2003 we shipped a game with in-game voice support, and a lot of features that gamers have now come to expect on the PC platform. A lot of these things are now features that Microsoft is planning to charge for.»
