This mod by the Portal: Prelude Team is the prequel to the Portal game. Features include more gameplay hours than the original game, 8 chapters, 19 test chambers, 48 challenges, 6 advanced maps, a brand new storyline and more than 400 lines of dialogue.
Portal: Prelude 1.2.0
Hey gamers, Nicolas here.
Can you believe that Portal: Prelude 1.0.0 was released in October 2008? Turns out, it's 2023 now, so that was 15 years ago, or 29 if you count the pandemic. Yet, somehow, I've been coaxed into releasing one last version that includes all of the patches and fixes added over these years to keep this mod playable in the face of an ever-changing Steam platform.
I'm deeply grateful to the community and the players that still message me relentlessly after all this time, whether it's to praise the mod, provide ideas or feedback (quite late), ask me whether I'm working on a remaster or whether they should work on a remaster (spoiler alert: no), or less kind messages altogether of course. It is... after all... the Internet.
I hope this version works for you so that I never have to look down the barrel of a 1.2.1 patch (╯°□°)╯︵ ┻━┻ (spoiler alert, I had to look down the barrel of a 1.2.1 patch). As usual, let me know if you have any feedback at <nicolas@portalprelude.com>
- Nicolas 'NykO18' Grevet
Installation
Extract the entire 'portal prelude' folder in your 'C:\Program Files (x86)\Steam\steamapps\sourcemods' folder (or wherever you keep your Steam library these days). If the 'sourcemods' folder does not exist, just create it. Restart Steam. The mod should appear in your library under 'Portal: Prelude'.
Changelog
Portal: Prelude 1.2.1 (released 2023-07-05)
* Fixed: game crash during the endgame sequence due to a vgui.dll issue
* Fixed: npc's eyes appearing pitch black
* Fixed: steam library icon not showing up
* Fixed: end credits names not visible
Portal: Prelude 1.2.0 (released 2023-06-29)
* Fixed: various startup crashes related to configurations and intro videos
* Fixed: super large subtitles font (for some reason)
* Fixed: subtitles might have been in Italian by default for some
* Fixed: control schemes might have been messed up by default for some
* Fixed: Chinese subtitles should now work
* Fixed: missing steam library icon
* Fixed: game crash during the endgame sequence due to a corrupted audio file
* Removed: corny intro video about a game studio that only existed in my dreams in 2009
* Removed: a few teenager's salacious jokes in both the audio and subtitles (2022 called, and cringed hard)
Portal: Prelude 1.1.5 (released 2009-01-29)
* Added: german translation (subtitles only)
* Added: czech translation (subtitles only)
* Added: chinese translation (subtitles only)
* Added: unofficial slovak translation (see portalprelude.com)
* Fixed: italian subtitles corrupted by additionnal quotes (thanks to Matteo Piazza)
* Fixed: russian subtitles corrupted by additionnal quotes (thanks to Matteo Piazza)
* Fixed: korean subtitles corrupted by missing tag (thanks to Nevets_Look)
* Fixed: portuguese subtitles corrupted by missing tag (thanks to Nevets_Look)
* Fixed: typos in spanish subtitles (thanks to Siegfried Anderson)
* Fixed: test chamber 6 not reloading when failing
* Fixed: difficulties to fire portals through some of the white holes
* Fixed: ability to go back when reaching the end of chamber 12
* Fixed: time challenge for chamber 15 was a step challenge
* Fixed: in a rare case glados was still attacking when shutted down
* Fixed: ability to go under the elevator before it came back in chamber 18
* Fixed: flying ghost chair in aperture laboratories
* Fixed: random crashes should disappear, let's hope some others won't appear
* Fixed: glados laser starting too fast, increased the delay
* Fixed: a few soundscape problems
* Fixed: credited the correct people for the correct stuff
* Fixed: missing projector model textures
* Fixed: music played during the second boss-fight not playing correctly or not at all
* Fixed: several cubemap (reflections) visual glitches
* Fixed: ability to open the door to the three ballcatchers in level 19, by only using a cube
* Fixed: lighting artifacts in the last levels
* Fixed: GlaDOS randomly stops attacking in the second round
* Fixed: subtitles activated by default when the mod is launched for the first time
* Fixed: hundreds of trivial glitches and tiny stuff everywhere in the levels
* Added: new aperture science laboratories logos
* Added: simpler and clearer signage in the first levels
* Added: maybe one, two or three new easter-eggs?
* Added: the correct graph and soundcache files
* Added: new lighting effects near metal grates
* Added: new intro sequence (vault lift)
Portal: Prelude 1.1.0 (released 2008-10-29)
* Added: dutch translation (subtitles only)
* Added: finnish translation (subtitles only)
* Added: hungarian translation (subtitles only)
* Added: italian translation (subtitles only)
* Added: korean translation (subtitles only)
* Added: portuguese translation (subtitles only)
* Added: russian translation (subtitles only)
* Added: spanish translation (subtitles only)
* Fixed: portals not fizzled when you handed back your portalgun
* Fixed: installer problems (mostly with Windows Vista)
* Fixed: huge freezes and lags when GlaDOS is started
* Fixed: morality core going through a grate in the last level
* Added: a toggle mode to the BTS button in test chamber 19
* Fixed: camera won't fall in test chamber 15
* Fixed: ability to go inside observation rooms using an engine glitch
* Fixed: finishing test chamber 6 could lead to Mike saying you failed
* Fixed: Erik saying "euros" instead of "dollars"
* Fixed: ability to go inside the box dispensers using an engine glitch
* Fixed: advanced chambers/challenges still locked when finishing the game
* Fixed: autosaves not correctly activated
* Added: autosaves on challenge start
* Added: autosaves after long speeches
* Fixed: player could get stuck under elevators
* Fixed: challenge 15 won't record scores
* Fixed: challenge 17 won't record scores
* Fixed: box dispensers can drop more than one cube
* Fixed: typos in french subtitles
* Fixed: typos in english subtitles
* Fixed: portal fizzler in test chamber 17 gives a cube for a camera
* Fixed: missing faces resulting in visible outside of the level
* Fixed: non-solid door in test chamber 3
* Fixed: non-solid door in test chamber 4
* Fixed: cubes can get blocked in the dispensers tube
* Added: an escape path in test chamber 9
* Fixed: glass panel can be broken with a chair in the aperture laboratories
* Fixed: cube can be lost in the orbs room in test chamber 19
* Fixed: cube can be lost before the pit in test chamber 19
* Added: a cube dispenser in test chamber 14
* Added: an alternative path in test chamber 15 (for the challenges)
* Added: a delay when turrets appear in test chamber 8
* Fixed: bogus elevator in test chamber 10
* Added: a distraction in the turrets room in test chamber 11
* Fixed: radio song does not stop when the radio is destoyed
* Fixed: moving a few autosaves and areaportals to prevent the game from crashing
* Fixed: improving lipsyncing but it's still random as faceposer keeps corrupting our sounds
* Fixed: ballcatchers can be activated with any thrown object
* Fixed: scorpions' song replaced by four variations of still alive
* Fixed: door won't open in the corridor at the beginning of test chamber 18
* Added: hints at the end of test chamber 18
* Added: a disclaimer when the game starts
* Added: a ledge for the first jump in test chamber 2
* Fixed: turrets fire too quickly in test chamber 1
* Added: a ledge for the fling in test chamber 3
* Fixed: lunch bag model sounds like metal
* Added: english part to the commentary, to point out that there's subtitles
* Added: new "directional sign" textures for test chamber 19 BTS area
* Added: hints under the stairs in test chamber 19
* Added: another path to get to the BTS area in test chamber 19
* Fixed: particles and light color of disintegrators
* Fixed: particles color of "only-portals" fizzlers
* Fixed: rework a few textures for the BTS/maintenance areas to look less old
* Fixed: clean and optimize level geometry
* Added: missing challenge records for test chamber 15
* Added: missing challenge records for test chamber 18
* Added: missing challenge records for test chamber 19
* Fixed: GlaDOS force field insta-kills too randomly and too often
* Fixed: bogus NPC animations
* Removed: alternative solution for test chamber 4
* Added: space between "only-portal" fizzlers and disintegrators in test chamber 15
* Fixed: snoozing man is not snoozing
* Added: NPCs in some empty observation rooms
* Fixed: fizzler in test chamber 15 is destroying the energy orb
* Fixed: too many letal turrets in test chamber 15
* Added: hints in the 4-turrets room in test chamber 17
* Added: a glass panel to see the rotating wall in test chamber 17
* Added: missing tubes in box dispensers
* Added: crosses on wedge shaped platforms in test chamber 19
* Fixed: GlaDOS stops attacking after her second attack in the second round
* Added: restored stairs in the BTS/maintenance area in test chamber 15
* Added: clipping in most of the stairs to avoid view shaking
* Fixed: in a rare case, the cube isn't respawned in test chamber 17
* Fixed: in a rare case, the cube isn't respawned in test chamber 18
* Fixed: overlapping blocks in test chamber 19
* Fixed: at the end, the new menu doesn't show up if the console if visible
Portal: Prelude 1.0.0 (released 2008-10-10)
* Initial release
Hey! Happy 15th year anniversary, Prelude! I still remember playing it as a kid back in early 2010s on a broken PC.
The mod is showing up in my library and when I launch it I get an error saying "RaiseJException: Method call Failed: Installs.OpenInstalWizard call had invalid argument (arg 0): is_array: true array_values { double_value 1.501500786211467e+19 }"
Anyone know how to fix this?
This seems to be a pretty rare issue, I can only see one other person on the Internet having it, but no solution, unfortunately: Steamcommunity.com
I assume it's you because it's the exact same message, but I see you also posted on the Entropy: Zero mod page with that same issue, so it seems the issue comes from your side of the fence.
ok I was able to run the mod, I just installed the original portal from the steam library, and as for entropy: zero I also own it only this mod works without any problems including the second part, I did not have to install additional games ..strange
WOW. HAPPY LATEST BIRTHDAY FROM ME AS LATEST APERTURE SCIENCE FAN, PRELUDE!
At the end of the game in the service rooms, the game crashes after the character opens the door near the main entrance to the GLaDOS room. I ran the game three times and each time the game crashes at this point.
UPD. Had to start the last chapter over again through a new game. Thankfully this time, the game didn't crash. And if I start from my last saves, I still keep crashing. If needed in the future to fix problems with random crashes, I've backed up these saves.
Let me know here in the comments if you need it.
Yeah, that's always been a finicky point for me as well. Usually, the save states are pretty reliable though.
Mind you, I'm still playing a patched version of the 1.1.5 release.
I have a weird problem where some of the audio gives me earrape noises or just cut off each other. Making it sound weird. Every other mod i played didn't have this issue. I don't know the issue that could be causing this.
anyone know how to fix the fov in Portal Prelude after it plays those cutscenes? Like my normal fox is 110 but it gets down to a gross 75 after those cutscenes for some reason
I also noticed the same problem with FOV display. This bug was in the old versions of the modification. To fix the display of weapons on the screen, you need to reduce the FOV to the minimum value.
That's not a remake? It a different story in Portal universe, right?
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Мне тут smartscreen жалуется, что файл небезопасный. Это ведь не так?
Нету вирусов, некоторые антивирусники имеют такое свойство, что жалуются на посторонние файлы потому что папки игры залазают в стим и сам портал.
ребят кто поможет установить мод?
Просто скачай портал 1 в стиме если нету тогда не сможешь ну а если есть кидай все в sourcemods вот и все! (НАДО ПЕРЕЗАПУСТИТЬ СТИМ)
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Hello, the game does not show me the Spanish subtitles, what can I do?