- Ninja Skins
- Ninja Skins/fi
- Ninja Skins/fr
- Ninja Skins/pl
- Ninja Skins/pt-br
- Ninja Skins/ru
- November 12, 2010 Patch (Portal)
- November 12, 2010 Patch (Portal)/es
- November 12, 2010 Patch (Portal)/fi
- November 12, 2010 Patch (Portal)/fr
- November 12, 2010 Patch (Portal)/pl
- November 12, 2010 Patch (Portal)/pt-br
- November 12, 2010 Patch (Portal)/ru
- November 18, 2022 Patch (Portal)
- November 19, 2022 Patch
- November 19, 2022 Patch/ru
- November 20, 2012 Patch
- November 20, 2012 Patch/fi
- November 20, 2012 Patch/ru
- November 20, 2019 Patch
- November 20, 2019 Patch/es
- November 20, 2019 Patch/ru
- November 21, 2012 Patch
- November 21, 2012 Patch/fi
- November 21, 2012 Patch/ru
- November 26, 2012 Patch
- November 26, 2012 Patch/fi
- November 26, 2012 Patch/ru
- November 27, 2007 Patch (Portal)
- November 27, 2007 Patch (Portal)/fi
- November 27, 2007 Patch (Portal)/fr
- November 27, 2007 Patch (Portal)/pl
- November 27, 2007 Patch (Portal)/pt-br
- November 27, 2007 Patch (Portal)/ru
- November 30, 2012 Patch (Portal)
- November 30, 2012 Patch (Portal)/es
- November 30, 2012 Patch (Portal)/fi
- November 30, 2012 Patch (Portal)/pl
- November 30, 2012 Patch (Portal)/pt-br
- November 30, 2012 Patch (Portal)/ru
- November 30, 2017 Patch
- November 30, 2017 Patch/ru
- ORANGE
- Observation Room
- Obtaining Portal: Still Alive achievements
- Obtaining Portal: Still Alive achievements/cs
- Obtaining Portal: Still Alive achievements/fi
- Obtaining Portal: Still Alive achievements/fr
- Obtaining Portal: Still Alive achievements/ru
- Obtaining Portal 2 achievements
- Obtaining Portal 2 achievements/fi
- Obtaining Portal 2 achievements/fr
- Obtaining Portal 2 achievements/ja
- Obtaining Portal 2 achievements/ko
- Obtaining Portal 2 achievements/ru
- Obtaining Portal 2 achievements/zh-hant
- Obtaining Portal Stories: Mel achievements
- Obtaining Portal achievements
- Obtaining Portal achievements/es
- Obtaining Portal achievements/fi
- Obtaining Portal achievements/fr
- Obtaining Portal achievements/ja
- Obtaining Portal achievements/ko
- Obtaining Portal achievements/ru
- Obtaining Rexaura achievements
- Obtaining portal 2 achievements
- Obtaining portal achievements
- October 1, 2019 Patch
- October 1, 2019 Patch/es
- October 1, 2019 Patch/ru
- October 10, 2015 Patch
- October 10, 2015 Patch/fr
- October 10, 2015 Patch/pl
- October 10, 2015 Patch/pt-br
- October 10, 2015 Patch/ru
- October 11, 2011 Patch
- October 11, 2011 Patch/es
- October 11, 2011 Patch/fi
- October 11, 2011 Patch/fr
- October 11, 2011 Patch/ko
- October 11, 2011 Patch/ru
- October 11, 2011 Patch/zh-hant
- October 11, 2011 Patch (Tools)
- October 11, 2011 Patch (Tools)/fi
- October 11, 2011 Patch (Tools)/fr
- October 11, 2011 Patch (Tools)/pl
- October 11, 2011 Patch (Tools)/ru
- October 11, 2011 Patch (Tools)/zh-hans
- October 11, 2012 Patch (Tools)/zh-hans
- October 20, 2016 Patch (The Lab)
- October 20, 2016 Patch (The Lab)/ru
- October 24, 2011 Patch
- October 24, 2011 Patch/es
- October 24, 2011 Patch/fi
- October 24, 2011 Patch/fr
- October 24, 2011 Patch/ko
- October 24, 2011 Patch/ru
- October 24, 2011 Patch (Tools)
- October 24, 2011 Patch (Tools)/es
- October 24, 2011 Patch (Tools)/fi
- October 24, 2011 Patch (Tools)/fr
- October 24, 2011 Patch (Tools)/pl
- October 24, 2011 Patch (Tools)/ru
- October 24, 2011 Patch (Tools)/zh-hans
- October 25, 2011 Patch
- October 30, 2007 Patch (Portal)
- October 30, 2007 Patch (Portal)/fi
- October 30, 2007 Patch (Portal)/fr
- October 30, 2007 Patch (Portal)/pl
- October 30, 2007 Patch (Portal)/pt-br
- October 30, 2007 Patch (Portal)/ru
- October 31, 2018 Patch
- October 31, 2018 Patch/ru
- October 4, 2011 Patch
- October 4, 2011 Patch/fi
- October 4, 2011 Patch/fr
- October 4, 2011 Patch/ko
- October 4, 2011 Patch/pl
- October 4, 2011 Patch/ru
- October 4, 2011 Patch (Tools)
- October 4, 2011 Patch (Tools)/fi
- October 4, 2011 Patch (Tools)/fr
- October 4, 2011 Patch (Tools)/pl
- October 4, 2011 Patch (Tools)/ru
- October 4, 2011 Patch (Tools)/zh-hans
- October 7, 2011 Patch
- October 7, 2011 Patch/fi
- October 7, 2011 Patch/fr
- October 7, 2011 Patch/ko
- October 7, 2011 Patch/ru
- Official blog
- Oracle Turret
- Oracle Turret/de
- Oracle Turret/es
- Oracle Turret/fi
- Oracle Turret/fr
- Oracle Turret/ru
- Oracle Turret/zh-hans
- Oracle Turret/zh-hant
- Oracle Turret voice lines
- Oracle Turret voice lines/de
- Oracle Turret voice lines/es
- Oracle Turret voice lines/fi
- Oracle Turret voice lines/fr
- Oracle Turret voice lines/pt-br
- Oracle Turret voice lines/ru
- Orange
- Orange Box
- Orange Co-op Bot
- Orange Gel
- Osiągnięcia
- Osiągnięcie
- P-BODY FACEPALM
- P-BODY FIST PUMP
- P-BODY PRETZEL WAVE
- P-BODY SELFSPIN
- P-BODY SHRUG
- P-BODY SITSPIN
- P-BODY SPIN JUMP
- P-BODY THUMBS UP
- P-Body
- P-Body/es
- P-Body/fr
- P-Body Facepalm
- P-Body Fist Pump
- P-Body Pretzel Wave
- P-Body Self Spin
- P-Body Selfspin
- P-Body Shrug
- P-Body Sit Spin
- P-Body Sitspin
- P-Body Spin Jump
- P-Body Thumbs Up
- P-body
- P-body/cs
- P-body/es
- P-body/fi
- P-body/fr
- P-body/ko
- P-body/pt-br
- P-body/ru
- P-body Facepalm
- P-body Facepalm/fi
- P-body Facepalm/fr
- P-body Facepalm/pt-br
- P-body Fist Pump
- P-body Fist Pump/fi
- P-body Fist Pump/fr
- P-body Fist Pump/pl
- P-body Fist Pump/pt-br
- P-body Pretzel Wave
- P-body Pretzel Wave/fi
- P-body Pretzel Wave/fr
- P-body Pretzel Wave/pt-br
- P-body Selfspin
- P-body Selfspin/fi
- P-body Selfspin/fr
- P-body Selfspin/pt-br
- P-body Shrug
- P-body Shrug/fi
- P-body Shrug/fr
- P-body Shrug/pt-br
- P-body Sitspin
- P-body Sitspin/fi
- P-body Sitspin/fr
- P-body Sitspin/pt-br
- P-body Spin Jump
- P-body Spin Jump/fi
- P-body Spin Jump/fr
- P-body Spin Jump/pt-br
- P-body Thumbs Up
- P-body Thumbs Up/fi
- P-body Thumbs Up/fr
- P-body Thumbs Up/pt-br
- P-body gestures
- P-body gestures/fi
- P-body gestures/fr
- P-body gestures/pl
- P-body gestures/pt-br
- P-body gestures/ru
- P2
- P2 Wearable Snorkel
- PAINT JOB SKINS
- PBody
- PETI
- PRINCE TAVISH'S CROWN
- PYRO'S BEANIE
- P body
- Paint Gun
- Paint Job Skins
- Paint Job Skins/fi
- Paint Job Skins/fr
- Paint Job Skins/pl
- Paint Job Skins/pt-br
- Paint Job Skins/ru
- Paint dropper
- Paint gun
- Panel
- Panel/ru
- Panele
- Panels
- Panels/de
- Panels/fi
- Panels/fr
- Panels/pl
- Panels/ru
- Panels (Video)
- Panels (video)
- Panels (video)/fi
- Panels (video)/fr
- Panels (video)/ja
- Panels (video)/ru
- Paranoia Core
- Party Associate
- Party Escort Bot
- Party Escort Bot/es
- Party Escort Bot/fi
- Party Escort Bot/fr
- Party Escort Bot/pl
- Party Escort Bot/ru
- Patches
- Patches/cs
- Patches/da
- Patches/es
- Patches/fi
- Patches/fr
- Patches/ko
- Patches/nl
- Patches/pl
- Patches/pt-br
- Patches/ru
- Patches/zh-hans
- Patent Pending
- Patent Pending/fi
- Patent Pending/pt-br
- Patent Pending/ru
- Pbody
- PeTI
- Pedestal Button
- Pedestal Button/fi
- Pedestal Button/fr
- Pedestal Button/ko
- Pedestal Button/pl
- Pedestal Button/ru
- Peer Review
- Peer Review/es
- Peer Review/ru
- Perpetual Testing Initiative
- Perpetual Testing Initiative/es
- Perpetual Testing Initiative/fi
- Perpetual Testing Initiative/fr
- Perpetual Testing Initiative/ko
- Perpetual Testing Initiative (video)
- Perpetual Testing Initiative (video)/fi
- Personajes
- Personality Construct
- Personality Core
- Personality Core/fi
- Personality Core/fr
- Personality Cores/fr
- Personality Sphere
- Personality core
- Personality core/fi
- Personality core/fr
- Personality core/ru
- Personality cores
- Personality sphere
- Peti
- Ping
- Ping Tool
- Ping Tool/Look Ping
- Ping Tool/es
- Ping Tool/pt-br
- Ping tool
- Piston
- Piston/fi
- Piston/fr
- Piston/ru
- Piston Platform
- Plecak
- Pneumatic Diversity Vent
- Pneumatic Diversity Vent/fi
- Pneumatic Diversity Vent/fr
- Pneumatic Diversity Vent/ru
- Pneumatic Diversity Vent (Video)
- Pneumatic Diversity Vent (video)
- Pneumatic Diversity Vent (video)/fi
- Pneumatic Diversity Vent (video)/fr
- Pneumatic Diversity Vent (video)/pt-br
- Poker Night 2
- Poker Night 2/pt-br
- Pomieszczenia testowe
- Pomieszczenie Testowe
- Pomieszczenie testowe
- Portable Quantum Tunneling Device
- Portal
- Portal/cs
- Portal/de
- Portal/es
- Portal/fi
- Portal/fr
- Portal/ja
- Portal/ko
- Portal/pl
- Portal/ru