BOOTH, M. (2009) The AI Systems of Left 4 Dead http://www.valvesoftware.com/publications/2009/ai_systems_of_l4d_mike_booth.pdf
CARLESS, S. (2006) Student Feature: ‘2006 IGF Student Showcase Q&A: Nuclear Monkey Software (Narbacular Drop)’ http://www.gamasutra.com/view/news/99471/Student_Feature_2006_IGF_Student_Showcase_QA_Nuclear_Monkey_Software_Narbacular_Drop.php
CARLESS, S. (2008) The GLaDOS Effect – Can Antagonists Rule The World? http://www.gamasutra.com/view/news/112246/Opinion_The_GLaDOS_Effect__Can_Antagonists_Rule_The_World.php
CIFALDI, F. (2011) Kim Swift On Creating Quantum Conundrum http://www.gamasutra.com/view/feature/134876/kim_swift_on_creating_quantum_.php
CONDITT, J. (2013) Antichamber: How a game of impossible spaces came together http://www.engadget.com/2013/02/01/antichamber-how-a-game-of-impossible-spaces-came-together/
COWAN, D. (2011) Critical Reception: Valve’s Portal 2 http://www.gamasutra.com/view/news/124504/Critical_Reception_Valves_Portal_2.php
FIERRO, A. (2015) La prueba de Turing http://www.adiciones.es/2015/06/15/la-prueba-de-turing/
FOSTER, A. (2013) Alternate Reality Game puzzle design http://www.gamasutra.com/blogs/AdamFoster/20130617/194321/Alternate_Reality_Game_puzzle_design.php
GRAFT, K. (2009) Valve’s Writers And The Creative Process http://www.gamasutra.com/view/feature/132539/valves_writers_and_the_creative_.php
GRAFT, K. (2009) GDC Austin: Half-Life, Portal Scribes Talk Writing Process http://www.gamasutra.com/view/news/116236/GDC_Austin_HalfLife_Portal_Scribes_Talk_Writing_Process.php
GRAYSON, N. (2013) Wot I Think: Antichamber https://www.rockpapershotgun.com/2013/01/31/wot-i-think-antichamber/
JAGNOW, R. (2011) The POrTAl TwO ARG: The Whole Story http://www.gamasutra.com/view/feature/134740/the_portal_two_arg_the_whole_story.php
JERIASKA (2009) Interview: Jonathan Coulton On ‘Still Alive’, PAX Style http://www.gamasutra.com/view/news/116019/Interview_Jonathan_Coulton_On_Still_Alive_PAX_Style.php
KLEINHENZ, M. (2012) The Generational Shift in Interactive Storytelling http://www.gamasutra.com/view/feature/164425/the_generational_shift_in_.php
KOSTER, R. (2004) Book Excerpt: ‘A Theory Of Game Design’ – What Games Aren’t http://www.gamasutra.com/view/feature/2173/book_excerpt_a_theory_of_game_.php
LADAVAC, A. (2015) Fast Iteration Tools in the Production of the Talos Principle http://www.gdcvault.com/play/1022784/Fast-Iteration-Tools-in-the
LIVINGSTON, C. (2015) Portal Stories: Mel is huge and challenging and free http://www.pcgamer.com/portal-stories-mel-is-huge-and-challengingand-free/
MACHKOVECH, S. (2013) The Swapper review: Swap it to me http://arstechnica.com/gaming/2013/05/the-swapper-review-swap-it-to-me/
MARIE, M. (2010) Aperture Science: A History http://www.gameinformer.com/b/features/archive/2010/03/24/aperture-science_3a00_-a-history.aspx
NEWMAN, H. (2014) The Talos Principle underwent 15,000 hours of playtesting – but not by humans http://venturebeat.com/2014/11/04/the-talos-principle-underwent-15000-hours-of-playtesting-but-not-by-humans-interview/