Modifica di Half-Life 2 (beta) (sezione)

==Bibliografia==
*[https://money.cnn.com/2003/10/07/commentary/game_over/column_gaming/index.htm Chris Morris, ''Playable version of Half-Life 2 stolen'', «CNN Business», 7 ottobre 2003]
*[https://money.cnn.com/2003/04/23/commentary/game_over/column_gaming/ Chris Morris, ''Here Comes Half-Life 2'', «CNN Business», 24 aprile 2003] 
*[https://combineoverwiki.net/wiki/Development_of_Half-Life_2 ''Development of Half-Life 2'', Combine Overwiki]
*[https://www.valvetime.co.uk/threads/i-need-the-assistance-of-the-community.10692/ Gabe Newell, ''I need the assistance of the community'', «ValveTime», 2 ottobre 2003]
*[https://www.gamespot.com/articles/the-final-hours-of-half-life-2/1100-6112889/ Geoff Keighley, ''The Final Hours of Half-Life 2'', «Gamespot», 28 aprile 2016]
*[https://combineoverwiki.net/wiki/Half-Life_2_storyline_evolution ''Half-Life 2 storyline evolution'', Combine Overwiki]
*[https://www.horrormoth.com/2019/12/uno-sviluppo-travagliato-focus-on-half.html Sergio Novelli, ''Uno sviluppo travagliato (Focus on "Half-Life 2" Beta)'', «Horror Moth», 8 dicembre 2019]
*[https://www.eurogamer.net/the-boy-who-stole-half-life-2-article Simon Parkin, ''The boy who stole Half-Life 2'',«Eurogamer», 14 maggio 2009]
*[https://vcc.wiki/wiki/The_2003_Leak/FBI_Logs ''The 2003 Leak/FBI Logs'' Valve Cut Content Wiki]
*[https://www.ign.com/articles/2003/09/24/half-life-2-officially-delayed Tom Mcnamara, ''Half-Life 2 Officially Delayed'', «IGN», 24 settembre 2003]
*Valve Corporation, ''Half-Life<sup>2</sup>: Raising the Bar'', Stati Uniti d'America, Prima Games, 2004
*[https://www.youtube.com/watch?v=TbZ3HzvFEto Valve e Secret Tape, ''Half-Life: 25th Anniversary Documentary'', «Youtube», 17 novembre 2023]