- 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
- Portal/zh-hans
- Portal: Companion Collection
- Portal: Outside Influence
- Portal: Outside Influence/fr
- Portal: Outside Influence/pt-br
- Portal: Prelude
- Portal: Prelude/fr
- Portal: Prelude/ru
- Portal: Prelude Complex's Visit
- Portal: Prelude Complex's Visit/fr
- Portal: Prelude Final Battle
- Portal: Prelude Final Battle/fr
- Portal: Prelude GLaDOS' Boot
- Portal: Prelude GLaDOS' Boot/fr
- Portal: Prelude Morality Core's Quest
- Portal: Prelude Morality Core's Quest/fr
- Portal: Prelude Test Chamber 00
- Portal: Prelude Test Chamber 00/fr
- Portal: Prelude Test Chamber 00/pl
- Portal: Prelude Test Chamber 01
- Portal: Prelude Test Chamber 01/fr
- Portal: Prelude Test Chamber 02
- Portal: Prelude Test Chamber 02/fr
- Portal: Prelude Test Chamber 03
- Portal: Prelude Test Chamber 03/fr
- Portal: Prelude Test Chamber 03 (Bonus)
- Portal: Prelude Test Chamber 03 (Bonus)/fr
- Portal: Prelude Test Chamber 04
- Portal: Prelude Test Chamber 04/fr
- Portal: Prelude Test Chamber 04 (Bonus)
- Portal: Prelude Test Chamber 04 (Bonus)/fr
- Portal: Prelude Test Chamber 05
- Portal: Prelude Test Chamber 05/fr
- Portal: Prelude Test Chamber 05 (Advanced)
- Portal: Prelude Test Chamber 05 (Advanced)/fr
- Portal: Prelude Test Chamber 05 (Bonus)
- Portal: Prelude Test Chamber 05 (Bonus)/fr
- Portal: Prelude Test Chamber 06
- Portal: Prelude Test Chamber 06/fr
- Portal: Prelude Test Chamber 07
- Portal: Prelude Test Chamber 07/fr
- Portal: Prelude Test Chamber 07 (Bonus)
- Portal: Prelude Test Chamber 07 (Bonus)/fr
- Portal: Prelude Test Chamber 08
- Portal: Prelude Test Chamber 08/fr
- Portal: Prelude Test Chamber 08 (Bonus)
- Portal: Prelude Test Chamber 08 (Bonus)/fr
- Portal: Prelude Test Chamber 09
- Portal: Prelude Test Chamber 09/fr
- Portal: Prelude Test Chamber 09 (Advanced)
- Portal: Prelude Test Chamber 09 (Advanced)/fr
- Portal: Prelude Test Chamber 09 (Bonus)
- Portal: Prelude Test Chamber 09 (Bonus)/fr
- Portal: Prelude Test Chamber 10
- Portal: Prelude Test Chamber 10/fr
- Portal: Prelude Test Chamber 10 (Bonus)
- Portal: Prelude Test Chamber 10 (Bonus)/fr
- Portal: Prelude Test Chamber 11
- Portal: Prelude Test Chamber 11/fr
- Portal: Prelude Test Chamber 11 (Bonus)
- Portal: Prelude Test Chamber 11 (Bonus)/fr
- Portal: Prelude Test Chamber 12
- Portal: Prelude Test Chamber 12/fr
- Portal: Prelude Test Chamber 12 (Advanced)
- Portal: Prelude Test Chamber 12 (Advanced)/fr
- Portal: Prelude Test Chamber 12 (Bonus)
- Portal: Prelude Test Chamber 12 (Bonus)/fr
- Portal: Prelude Test Chamber 13
- Portal: Prelude Test Chamber 13/fr
- Portal: Prelude Test Chamber 13 (Bonus)
- Portal: Prelude Test Chamber 13 (Bonus)/fr
- Portal: Prelude Test Chamber 14
- Portal: Prelude Test Chamber 14/fr
- Portal: Prelude Test Chamber 14 (Advanced)
- Portal: Prelude Test Chamber 14 (Advanced)/fr
- Portal: Prelude Test Chamber 14 (Bonus)
- Portal: Prelude Test Chamber 14 (Bonus)/fr
- Portal: Prelude Test Chamber 15
- Portal: Prelude Test Chamber 15/fr
- Portal: Prelude Test Chamber 15 (Bonus)
- Portal: Prelude Test Chamber 15 (Bonus)/fr
- Portal: Prelude Test Chamber 16
- Portal: Prelude Test Chamber 16/fr
- Portal: Prelude Test Chamber 16 (Bonus)
- Portal: Prelude Test Chamber 16 (Bonus)/fr
- Portal: Prelude Test Chamber 17
- Portal: Prelude Test Chamber 17/fr
- Portal: Prelude Test Chamber 17 (Advanced)
- Portal: Prelude Test Chamber 17 (Advanced)/fr
- Portal: Prelude Test Chamber 17 (Bonus)
- Portal: Prelude Test Chamber 17 (Bonus)/fr
- Portal: Prelude Test Chamber 18
- Portal: Prelude Test Chamber 18/fr
- Portal: Prelude Test Chamber 18 (Bonus)
- Portal: Prelude Test Chamber 18 (Bonus)/fr
- Portal: Prelude Test Chamber 19
- Portal: Prelude Test Chamber 19/fr
- Portal: Prelude Test Chamber 19 (Advanced)
- Portal: Prelude Test Chamber 19 (Advanced)/fr
- Portal: Prelude Test Chamber 19 (Bonus)
- Portal: Prelude Test Chamber 19 (Bonus)/fr
- Portal: Reloaded
- Portal: Reloaded Introduction
- Portal: Reloaded Test Chamber 01
- Portal: Reloaded Test Chamber 25
- Portal: Revolution
- Portal: Still Alive
- Portal: Still Alive/cs