Mods / Turret

• 112 Angry Tests: Part 7by CaretCaretI have now released a new level called 9 Lives, try it out! Part 7: Revenge of the Turret About the map pack: This map pack consists of six maps with two puzzles per map and one intro map. Every map has a different theme and puzzle element. I have tried to keep the difficulty level of the single...716.4k downloadsupdated 14 y ago
• 112 Angry Tests: Part 5by CaretCaretI have now released a new level called 9 Lives, try it out! Part 5: You Put the Fun in Funnel About the map pack: This map pack consists of six maps with two puzzles per map and one intro map. Every map has a different theme and puzzle element. I have tried to keep the difficulty level of the sin...707.6k downloadsupdated 14 y ago
• 112 Angry Tests: Part 4by CaretCaretI have now released a new level called 9 Lives, try it out! Part 4: A Bridge Too Far About the map pack: This map pack consists of six maps with two puzzles per map and one intro map. Every map has a different theme and puzzle element. I have tried to keep the difficulty level of the single playe...706.4k downloadsupdated 14 y ago
• 112 Angry Tests: Part 6by CaretCaretI have now released a new level called 9 Lives, try it out! Part 6: A House Divided About the map pack: This map pack consists of six maps with two puzzles per map and one intro map. Every map has a different theme and puzzle element. I have tried to keep the difficulty level of the single player...704.3k downloadsupdated 14 y ago
• 112 Angry Tests: Part 1by CaretCaretI have now released a new level called 9 Lives, try it out! Part 1: Once Upon a Time… About the map pack: This map pack consists of six maps with two puzzles per map and one intro map. Every map has a different theme and puzzle element. I have tried to keep the difficulty level of the single play...688.1k downloadsupdated 14 y ago
• GGelocityby RadixThis coop map is rather a race track than a puzzle. Use your portal gun cleverly to trick your opponent and be the first to reach the finish line! You will probably need a few laps until you know all tricks - so give it a second try! Please note that this map is really large. That is why it takes...377.7k downloadsupdated 14 y ago
• Cchickentest 3by ChickenMobileA coop map made for the 2011 summer mapping initiative. Have fun people!352.7k downloadsupdated 14 y ago
• DDesigned for Danger Part 3by PuddyPart 3 / 8 To preserve Designed for Dangers pacing and storyline it is recommended that you play the maps in order. The collection can be found here: More information can be found at www.designedfordanger.com ! NOTE: You may need to set Shader Detail to high to avoid strange/weird reflections.331.5k downloadsupdated 14 y ago
• DDesigned for Danger Part 5by PuddyPart 5 / 8 To preserve Designed for Dangers pacing and storyline it is recommended that you play the maps in order. The collection can be found here: More information can be found at www.designedfordanger.com ! NOTE: You may need to set Shader Detail to high to avoid strange/weird reflections.319.4k downloadsupdated 14 y ago
• DDesigned for Danger Part 6by PuddyPart 6 / 8 To preserve Designed for Dangers pacing and storyline it is recommended that you play the maps in order. The collection can be found here: More information can be found at www.designedfordanger.com ! NOTE: You may need to set Shader Detail to high to avoid strange/weird reflections.318.1k downloadsupdated 14 y ago
• DDesigned for Danger Part 8by PuddyPart 8 / 8 To preserve Designed for Dangers pacing and storyline it is recommended that you play the maps in order. The collection can be found here: More information can be found at www.designedfordanger.com ! NOTE: You may need to set Shader Detail to high to avoid strange/weird reflections.306.4k downloadsupdated 14 y ago
• DDesigned for Danger Part 4by PuddyPart 4 / 8 To preserve Designed for Dangers pacing and storyline it is recommended that you play the maps in order. The collection can be found here: More information can be found at www.designedfordanger.com ! NOTE: You may need to set Shader Detail to high to avoid strange/weird reflections.294.9k downloadsupdated 14 y ago
• DDesigned for Danger Part 1by PuddyPart 1 / 8 To preserve Designed for Dangers pacing and storyline it is recommended that you play the maps in order. The collection can be found here: More information can be found at www.designedfordanger.com ! NOTE: You may need to set Shader Detail to high to avoid strange/weird reflections.276.8k downloadsupdated 14 y ago
• TTricky Tripleby LateLJThis coop map consists of 3 testing chambers and features different kind of testing elements. It is not very long map though and maybe not all that tricky, but I hope you enjoy it nonetheless! :D229.3k downloadsupdated 14 y ago
• GGelocity Time Trial - Track 1by RadixA slightly modified single player version of Gelocity 1 race map. This time you don't have to compete against your friend but you have to fight against the clock. Use your skills to reach the finish line as fast as you can! You will probably need a few laps until you know all tricks - so give it...206.1k downloadsupdated 14 y ago
• TThe Order of Things 03 (Coop)by Invocare_Ignisi hope you have fun199.8k downloadsupdated 11 y ago
• CCubes of Destinyby DonyelBe sure to make use of the 'tab' function in which you can see what your partner sees. Keep in mind in cooperative chambers you must employ two sets of portals. Teamwork and communication is key to completing any cooperative test chamber.147.8k downloadsupdated 14 y ago
• EExpendable Human Launch Vehicleby ceski"This is the longest and largest custom map I've played. None of the challenges were too taxing but they were all logical and interesting. What impressed me most is how the player's path twists through the space so you keep getting close to the exit (or entrance) and then moving away again." - wh...121.0k downloadsupdated 11 y ago
• AAperture Valentineby MeviousRoses are red. Violets are blue. Glados wants you dead. What could you do? Dear test subjects, today is your big day! Robot love is not wrong! Can you and your partner prove this to GLaDOS? Today you should grab your favorite co-op partner and explore the depths of the aperture science computer a...116.0k downloadsupdated 14 y ago
• DDecay - Part 2by BanjaxeDon't Start Here! Play Part 1 first. Part 1: Part 3: Or get the collection above. Major Spoilers Below! If you get stuck QubaHQ has put a great walkthrough on youtube:104.8k downloadsupdated 14 y ago
• MMinecraft in Portal 2 (Part 5: The End)by TimoteeeiDragon and endermans. DON'T STARE AT THEM! I warned you! There are some Secrets and different ways to kill the Dragon, try to find them all ;) Thanks every one for testing, especially to users of and early betatesters Psychomaster - , DoctorOrange - , OfficialTSG - . =============================...100.1k downloadsupdated 12 y ago
• YYin And Yangby narkfestmojoEasy map featuring ancient chinese Yin Yang symbol which has nothing at all to do with the puzzle. Just looks pretty, hope you enjoy because wow hammer put up a fight with the weird geometry. For anyone having trouble with the map; kevansevans has made a youtube video of him solving it. All advic...94.7k downloadsupdated 14 y ago
• CCurious Chamber 2by Nobi-KnobiPlease subscribe to my Collection "Curious Chamber", so you can play through from the first map till the end ;) Link:88.3k downloadsupdated 15 y ago
• CCOSMOGONY - Episode 1by DR3y85.7k downloadsupdated 13 y ago
• EEnigma Protocol | Chapter 3by Night MelonSet shortly after the events of the Cooperative Testing Initiative, a test subject wakes to GLaDOS' newest testing track. Make your way through 22 brand new test chambers in this map pack. Chamber 09 inspired by Ben77's Reflection85.4k downloadsupdated 6 y ago
• MMoonbase Luna-C 04: Newton's First Lawby CatsyGreetings, test subject, and welcome back to the Aperture Science Volunteer Employee Gravity Liberation Testing Program. If you are reading this, the Luna-C Enrichment Center assumes that you have successfully navigated the first three chambers of this program. If you have not, you should immedia...83.5k downloadsupdated 14 y ago
• EEnigma Protocol | Chapter 5by Night MelonSet shortly after the events of the Cooperative Testing Initiative, a test subject wakes to GLaDOS' newest testing track. Make your way through 22 brand new test chambers in this map pack.81.9k downloadsupdated 6 y ago
• EEnigma Protocol | Chapter 4by Night MelonSet shortly after the events of the Cooperative Testing Initiative, a test subject wakes to GLaDOS' newest testing track. Make your way through 22 brand new test chambers in this map pack.81.0k downloadsupdated 6 y ago
• BBroken Neuronsby LateLJShort map with 2 chambers. Featuring light bridge, funnel, faith plate and deadly lasers! Also GlaDOS. 1.01 released 24.1.2013: *Cannot get stuck if you leave the cube on the button80.7k downloadsupdated 14 y ago
• CCOSMOGONY - Episode 4by DR3y79.6k downloadsupdated 13 y ago
• EEnigma Protocol | Chapter 7by Night MelonSet shortly after the events of the Cooperative Testing Initiative, a test subject wakes to GLaDOS' newest testing track. Make your way through 22 brand new test chambers in this map pack.79.5k downloadsupdated 6 y ago
• CCOSMOGONY - Episode 2by DR3y78.2k downloadsupdated 13 y ago
• EEnigma Protocol | Chapter 6by Night MelonSet shortly after the events of the Cooperative Testing Initiative, a test subject wakes to GLaDOS' newest testing track. Make your way through 22 brand new test chambers in this map pack. Chamber 16 inspired by AmnDragon's Cubi.77.7k downloadsupdated 6 y ago
• CCOSMOGONY - Episode 6by DR3y77.1k downloadsupdated 13 y ago
• EExcellent Partnership 3 - Back and Forthby wildgoosespeederNot a light bridge puzzle this time. Fixed finnicky-ness.73.4k downloadsupdated 12 y ago
• CCOSMOGONY - Episode 5by DR3y72.7k downloadsupdated 13 y ago
• PPrison Escape: Act 2 (RE-LOADED)by blinkpenI didnt like the original Act 2 of the PE series so I completely made a new level. Enjoy.72.0k downloadsupdated 14 y ago
• PPOINT BLANK <COOP>by n/aCheck out the refurbished version too66.9k downloadsupdated 13 y ago
• AAbove Aperture - Part 1by La Petite MagicienneSTORY : --------------- You start in a test hall of an unknow sector of Aperture Center. Find what is going on here ! PART 1 : ---------------- This part contains 3 open sky testing chambers. You will have to use lightbridge, faith plates, lasers and your mind to solve this outdoor puzzles. BONUS...66.6k downloadsupdated 12 y ago
• AAbove Aperture - Part 3by La Petite MagicienneSTORY : ------------- You continue your journey in the Aperture Center. Try to escape that place ! PART 3 : -------------- This part contains two open sky testing chambers and a short escape area. You will have to use laser lightbridge and your mind to solve this outdoor puzzles. BONUS : --------...66.4k downloadsupdated 12 y ago
• MMoonbase Luna-C 05: Nature Abhorsby CatsyWelcome, , to the Aperture Science Volunteer Employee Gravity Liberation Testing Program. If you have just arrived at the Enrichment Center's Lunar Annex C from our offices on Earth, you may be experiencing disorientation, nausea, or resentment towards your coworkers who are not here with you to...66.1k downloadsupdated 14 y ago
• FFriendship is magic 13by LazyCoal59.4k downloadsupdated 13 y ago
• TThe Order of Things 12 (Coop)by Invocare_IgnisHave Fun, if you find any kind of bugs or exploits please leave a comment58.6k downloadsupdated 11 y ago
• DDiverse Remasteredby SkairulAfter a long hiatus and having to juggle with many things irl, I've finally been able to sit down and create another map inspired by my first ever published Hammer map, Diverse. A simple set of 3 tests utilising the unused Pneumatic Diversity Vent. Enjoy! Update 201019: WOW, over 10,000 visitors...55.5k downloadsupdated 7 y ago
• Cchickentest 2by ChickenMobileMy second coop map: half made in Alien Swarm SDK, other in P2AT. Have fun!54.5k downloadsupdated 14 y ago
• WWithout Portalgun: Turret Domino (c2m2)by Loo-KinThis map includes some simple tests with turrets. One note: You haven't got portalgun. All portals can be opened when you push special buttons. But it doesn't mean that this map is boring and total platforming. This map was created to prove puzzles without portalgun can be interesting and even or...54.0k downloadsupdated 15 y ago
• SSpare Map Pack - Part 1/3by ThatGreekGuyFIrst map has 2 test chambers that include lightbridges and a lot of flinging. The chambers are not particularly didficult but you have to think diffirently. It also has 2 small secrets. Have fun and leave a comment. Make sure to play the next two parts!! If you like the map and think i deserve a...53.0k downloadsupdated 12 y ago
• IInto the Multiverse Part 1 REUPLOADby Misty NullTHIS IS NOT MINE. Since the mod was deleted, I have reuploaded it so people can still play it. If the original creator wants me to take this down, contact me immediately. ALL CREDIT GOES TO BLAPPATURE EXECUTIVE NO. 150.8k downloadsupdated 8 y ago

1.3k turret mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.