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Portal:Prelude
Portal:Prelude is a mod for Portal developed by Nicolas "NykO18" Grevet, Jérémy "Capitaine Mousse" Barbe and Marc "Moroes" Bidoul. It adds a full storyline to the game, taking place before GlaDoS overtook Aperture Science.
Contents
Story
The story revolves around the pre-GLaDOS epoch, even before she was plugged in. At this time, test subjects were monitored by real Aperture Science employees, whose work was tedious, lengthy and repetitive. This is why they decided to build a great artificial intelligence that could both replace them in these difficult tasks, and also take responsibility for many other tasks within the complex and compete with Black Mesa's superiority. All employees of the Aperture Science complex are now eagerly awaiting GLaDOS. Maybe even a little too eagerly, as the upcoming events will tell.
It all starts with a test subject (named Abby) going through the 19 test chambers, which are considerably harder and more lethal then the ones of the original Portal (for example, turrets are encountered in the second chamber, whereas in the original Portal they don't appear until the 16th). After completing the test chambers, she is congratulated by the staff as being the first test subject to do such a feat, and that a party will be held in her honor.But, GLaDOS is also being activated at the same time (even though her morality core isn't prepared yet), so, as a special treat, they invite Abby to go and watch from a secret platform.
However, soon after awakening, GLaDOS proceeds to kill all the people in the chamber, and attempts to kill Abby too, with a mixture of telekinesis and death rays. However, the remaining survivors manage to shut off the generators. Knowing they have only a little while before the emergency generators kick in, they tell Abby to get the morality core and install it before she kills everyone. After navigating through a now destroyed Aperture Science, she finds the core and manages to attach it to GLaDOS, just as she had begun flooding the place with a neurotoxin.
Abby then blacks out, and, when awakens, is seen being dragged out of the chamber by a female Aperture Science employee. The screen then fades, and the final cut-scene is that of Abby walking through the parking lot of Aperture Science (where it is now raining), collapsing, and (presumably) dying, as the screen fades to black. The last thing she can see is the G-Man, standing in the booth and adjusting his tie.
Features
Portal: Prelude is a whole new story where the player takes the role of Abby, a Test Subject (whose model mostly consists of a blonde Chell model with other small changes), monitored by Aperture scientists with British accents who tend to make humorous comments. The game offers a few more gameplay hours than the original Portal, with 8 chapters, 19 Test Chambers, 48 challenges, 6 advanced maps, a brand new storyline and more than 400 lines of speech with various languages (as subtitles). The puzzles are also much more difficult than in the original Portal.
Speedrunning
The current world record time is 4:10 done by CBenni and Gocnak.
In Portal:Prelude, large portions of the game can be skipped both by OoB as well as inbounds glitches.
OoB route
Most chambers simply constist of going OoB asap and reaching the elevator; however, in contrary to Portal, it is impossible to enter the elevators
level_00
Using either a Radio Launch Glitch or Wallclimbing (preferably Radio Launch), the player can leave the glass room he spawns in early.
level_01
After aquiring the orange portalgun, destroy the turrets and clipping glitch OoB. Place a Portal below the room where the other portalgun is found, PQR to it. (It is unknown if the clipping portal can be placed below the room directly). Use an Edge Glitch to move OoB and reach the final fizzler quickly.
level_02
ABH, careful not to get hit by the falling box. Fall down into the pit, place a portal onto the upper left wall as you go; Clipping glitch OoB, it is possible to place the portal under the final hallway. PQR in, hitting the trigger to open the elevator doors.
level_03
Shoot a portal on both levels of the large staircase, the lower has to be to the very top of the corner (in order to do an edge glitch). Go through the lower one, shoot a portal (of the same color as the top one) behind the right turret. Walk into the edge glitch, shoot the portal OoB. If you use the color that is behind the turret, you get clipped OoB immediately, escaping the turrets. It is possible to shoot a portal in a way that pushes you into the trigger that is on top of the super mario warp zone, warping you to level_06 rightaway.
level_06
Portal bump OoB on the top of the right wall, place a portal below the button that is surrounded by 4 turrets, perform a Portal Stand to stay OoB; Shoot the portal of the same color as it is below the button to the fizzler at the end of the map. Use that shot to long-range PQR onto the button, hitting the elevator door opening trigger. Shoot a portal onto a wall (fast, else the turrets start firing) and perform a PDR at the fizzler.
level_07
Portal bump trough the door, clipping glitch OoB (using a wall either in a hole in the ceiling or the room containing the button), place a portal below the loading zone, PQR in, skipping the "portalgun removal scene".
level_08
Clipping glitch OoB, move to the room containing the cores, place a portal below the room that leads to the catwalk into the GlaDoS activation room. PBF into the core room, activate the lever. PQR into the other room, open the door, wait for the core to fall, take the core. place a portal in the GlaDoS activation room, with the bottom to the glass. Use the core to perform an upper edge glitch in the door frame, bumping you into the GlaDoS room, fall onto the TV. Retrieve the core, place a portal below GlaDoS by moving to the right of the TV and jumping. Place a portal right beneath the TV, drop the core in; it finishes the game.
Inbounds route
Trivia
- Jumping down from the TV in a specific timing in level_08 activates 2 triggers at once, mixing the cutscenes
- There are several easter eggs in Portal:Prelude:
- In level_04, there is a seperated room, in which dancing Badgers are found, singing the "Honey Badger" song
- In level_03, there is a Super Mario style warp zone, that actually warps the player into either level_04, level_05 or level_06 (it is used in the run); it can be accessed from inbounds in Chamber 09.
- Out of 19 chambers, 12 get skipped (= never entered at all) in the current speedrun route
- The entrances and exits of elevators that do not lead into or out of a level, are filled with an image of a small figure:
