True Lab

The True Laboratory is a private section of Alphys's Lab that can only be found & entered while on track for the True Pacifist Route.

Appearance
In contrast to the bright, sterile color scheme of the Lab, the true lab is its grimy, dark, fog-filled twin.

It has a dark blueish-green atmosphere and appears to be thoroughly decrepit, as if by a lack of usage. It is filled with perplexing objects, including beds, sinks, refrigerators, wall fans, mirrors, and Golden Flowers. Near the start, there's a vending machine that dispenses Popato Chisps.

True Pacifist Route
After the protagonist has completed the date with Alphys by giving her Undyne's letter, Papyrus calls the protagonist and strongly recommends to them that they meet Alphys at her lab. When the protagonist arrives at the Lab, there is a note in front of the previously locked door, which now opens upon approaching.

After entering the door, the protagonist descends an elevator, which promptly malfunctions and crashes. They then enter the True Laboratory, where they find several Lab Entries, Amalgamates, and four keys, which give access to the power supply to restart the elevator. Once the protagonist enters and activates the elevator, there is no going back to the rest of the Underground and they are locked in the True Lab.

Along the way, the protagonist learns through the entries of how Alphys experimented with Determination, Souls, dead monsters, and Golden Flowers, in the process resurrecting monsters, such as Shyren's sister and Snowdrake's Mother, in the form of Amalgamates and Asriel Dreemurr in the form of Flowey, respectively.

While exploring the Laboratory, the protagonist encounters a strange machine whose form eerily resembles that of Photoshop Flowey, albeit hollow and without Flowey's extra teeth, gums, or eyes. This machine is the DT Extraction Machine, which Alphys used to extract Determination from the six previously captured human Souls, the same Souls that Photoshop Flowey would use to power himself.

Additionally, the protagonist finds several video tapes (all of which have no video aspect to them) that document conversation between Toriel and Asgore, and Asriel and the First Human. These tapes imply that the human possessed darker tendencies, along with implying that they actually attempted suicide as part of a plan to combine their soul with Asriel in order to pass through the barrier. The VHS TV in that room resembles the TV used on Photoshop Flowey's head.

After all this, the protagonist returns power to the elevator and afterward, is surrounded by Amalgamates, only to be saved by Alphys, who states how the Amalgamates can get violent when not fed. She thanks the protagonist for the help and mentions that it is not the Amalgamates which would have made her "disappear" but instead something cowardly which she might do. (It is implied that this may be suicide.) As the protagonist makes their way to the elevator, the exit cuts off, and the voice of Asriel is heard congratulating the protagonist. The elevator then leaves the protagonist in New Home, with the elevator down to the Core sealed off with vines

so that the protagonist cannot leave, showing that the True Pacifist Ending's requirements have been completed.

Genocide and Near-Genocide Neutral Route
Upon defeating Undyne the Undying, she informs the protagonist that Alphys has evacuated the majority of the remaining monsters someplace safe, heavily implying to be True Lab. In near-genocide ending, Alphys informs that despite having to reveal the truth about her to everyone, people still treated her like a hero.

In the Genocide ending, the evacuation was for naught, as the Fallen Child destroyed the entire world and ended the timeline.

Lab Entries
Lab Entries can be found on the numerous panels can be seen throughout the lab. The entries are numbered from 1 to 21, but there is no 17th entry. In the game data there are two 17th lab entries which cannot be accessed in normal gameplay; one of them is completely in Wingdings and presumed to have been written by W. D. Gaster. Most of the entries contain extensive information about Alphys's experimentation concerning Souls, Determination, monsters, and Flowey.


 * ENTRY NUMBER 1: This is it... Time to do what the King has asked me to do. I will create the power to free us all. I will unleash the power of the SOUL.
 * ENTRY NUMBER 2: The barrier is locked by SOUL power.. Unfortunately, this power cannot be recreated artificially. SOUL power can only be derived from what was once living. So, to create more, we will have to use what we have now... The SOULs of monsters.
 * ENTRY NUMBER 3: But extracting a SOUL from a living monster would require incredible power... Besides being impractical, doing so would instantly destroy the SOUL's host. And, unlike the persistent SOULs of humans... The SOULs of most monsters disappear immediately upon death. If only I could make a monster's SOUL last...
 * ENTRY NUMBER 4: I've been researching humans to see if I can find any info about their SOULS. I ended up snooping around the castle... And found these weird tapes. I don't feel like ASGORE's watched them... I don't think he should.
 * ENTRY NUMBER 5: I've done it. Using the blueprints, I've extracted it from the human SOULs. I believe this is what gives their SOULs the strength to persist after death. The will to keep living... The resolve to change fate. Let's call this power... "Determination."
 * ENTRY NUMBER 6: ASGORE asked everyone outside the city for monsters that had "fallen down." Their bodies came in today. They're still comatose... And soon, they'll all turn into dust. But what happens if I inject "determination" into them? If their SOULS persist after they perish, then... Freedom might be closer than we all thought.
 * ENTRY NUMBER 7: We'll need a vessel to wield the monster SOULs when the time comes. After all, a monster cannot absorb the SOULs of other monsters. Just as a human cannot absorb a human SOUL... So then... What about something that's neither human nor monster?
 * ENTRY NUMBER 8: I've chosen a candidate. I haven't told ASGORE yet, because I want to surprise him with it... In the center of his garden, there's something special. The first golden flower, that grew before all the others. The flower from the outside world. It appeared just before the queen left. I wonder... What happens when something without a SOUL gains the will to live?
 * ENTRY NUMBER 9: things aren't going well. none of the bodies have turned into dust, so i can't get the SOULs. i told the families that i would give them the dust back for the funerals. people are starting to ask me what's happening. what do i do?
 * ENTRY NUMBER 10: experiments on the vessel are a failure. it doesn't seem to be any different from the control cases. whatever. they're a hassle to work with anyway. the seeds just stick to you, and won't let go...
 * ENTRY NUMBER 11: now that mettaton's made it big, he never talks to me anymore. ... except to ask when i'm going to finish his body. but i'm afraid if i finish his body, he won't need me anymore... then we'll never be friends ever again. ... not to mention, every time i try to work on it, i just get really sweaty...
 * ENTRY NUMBER 12: nothing is happening. i don't know what to do. i'll just keep injecting everything with "determination." i want this to work.
 * ENTRY NUMBER 13: one of the bodies opened its eyes.
 * ENTRY NUMBER 14: Everyone that had fallen down... ... has woken up. They're all walking around and talking like nothing is wrong. I thought they were goners...?
 * ENTRY NUMBER 15: Seems like this research was a dead end... But at least we got a happy ending out of it...? I sent the SOULS and the vessel back to ASGORE. And I called all of the families and told them everyone's alive. I'll send everyone back tomorrow. : )
 * ENTRY NUMBER 16: no No NO NO NO NO
 * ENTRY NUMBER 17 (Alphys): monsters' physical forms can't handle "determination" like humans' can. with too much determination, our bodies begin to break down. everyone's melted together...
 * ENTRY NUMBER 17 (Gaster): DARK DARKER YET DARKER THE DARKNESS KEEPS GROWING THE SHADOWS CUTTING DEEPER PHOTON READINGS NEGATIVE THIS NEXT EXPERIMENT SEEMS VERY VERY INTERESTING ... WHAT DO YOU TWO THINK?
 * ENTRY NUMBER 18: the flower's gone.
 * ENTRY NUMBER 19: the families keep calling me to ask when everyone is coming home. what am i supposed to say? i don't even answer the phone anymore.
 * ENTRY NUMBER 20: ASGORE left me five messages today. four about everyone being angry. one about this cute teacup he found that looks like me. thanks asgore.
 * ENTRY NUMBER 21: i spend all my time at the garbage dump now. it's my element.

VHS Tapes
The five VHS tapes can be found in the room with the TV, which is north of the room with the DT Extraction Machine. They contain recordings of Asriel, his family, and the Fallen Child interacting.
 * Tape 1
 * (Toriel) Pssst. Gorey, wake up.
 * (Asgore) Mmm? What is it, dear? ... er, and why do you have that video camera?
 * (Toriel) Shush! I want to get your reaction. Gorey, dearest. What is my favorite vegetable?
 * (Asgore) Hmmm... Carrots, right?
 * (Toriel) No no no! My favorite vegetable is... Eda-MOM-e. ... get it???
 * (Asgore) ... Go back to bed, dear.
 * (Toriel) No no!! Not yet! Hee hee hee. Now, If I were a dog, what breed of dog would I be?
 * (Asgore) Hmmm... I don't know, honey. What kind of dog would you be?
 * (Toriel) I would be... A MOMERANIAN.
 * (Asgore) Hohoho! You sure are excited to have this child. You konw, if you keep making jokes like this... One day, you could be... ... a famous MOMedian.
 * (Toriel) ... Well, I am going to bed.
 * (Asgore) Hey! Come on Tori! That one was funny!
 * (Toriel) Hahaha, I know. I am just teasing you. Goodnight, dear.
 * (Asgore) Goodnight, honey.
 * (Toriel) ... Oh dear, perhaps it is too dark in here for the video to come out.
 * Tape 2
 * (Asriel) Okay, Chara, are you ready? Do your creepy face! AHHHHH!! Hee hee hee! Oh! Wait! I had the lens cap on... What!? You're not gonna do it again...? Come on, quit tricking me! Haha!
 * Tape 3
 * (Asriel) Howdy, Chara! Smile for the camera! Ha, this time I got YOU! I left the cap on... ON PURPOSE! Now you're smiling for noooo reason! Hee hee hee. What? Oh, yeah, I remember. When we tried to make butterscotch pie for Dad, right? The recipe asked for cups of butter... But we accidentally put in buttercups instead. Yeah! Those flowers got him really sick. I felt so bad. We made Mom really upset. I should have laughed it off, like you did... Um, anyway, where are you going with this? Huh? Turn off the camera...? OK.
 * Tape 4
 * (Asriel) I... I don't like this idea, Chara. Wh.. what? N-no, I'm not... ... big kids don't cry. Yeah, you're right. No! I'd never doubt you, Chara. Never! Y... yeah! We'll be strong! We'll free everyone. I'll go get the flowers.
 * Tape 5
 * (Toriel) Chara... Can you hear me? We want you to wake up...
 * (Asgore) Chara! You have to stay determined! You can't give up! You are the future of humans and monsters...
 * (Asriel) ... Psst... Chara... Please... Wake up... I don't like this plan anymore. I... I... ... no, I said... I said I'd never doubt you. Six, right? We just have to get six... And we'll do it together, right?

Trivia

 * There is a known glitch in which the Blue Key cannot be seen after being dropped, but can still be picked up.
 * The teacup mentioned in Entry Number 20 can be found in Alphys's lab, sitting on her desk.
 * The DT Extraction Machine also heavily resembles a Cervine (Deer) skull, the same way Sans's gaster blasters resemble Canid (Dog) skulls and Asriel's skull during the final battle is Capra (Goat). Being that it is this shape and identical in design to Gyftrot's head there may be a connection between them.
 * If the protagonist enters the refrigerator room without turning on the ventilation first, the fog will change the protagonist’s interactions with the environment to vague assumptions. The refrigerators will be described as “It’s some sort of cold, rectangular object.” Other observations are:
 * “There's something here... It feels like it's breathing.
 * “There’s something here... It feels like a tree, ripe with delicious fruit.
 * “There's something here... It feels warm, and moist.”
 * “There’s something here... Something in the shape of a man.”
 * It’s speculated that the man-like shape seen in the fog of the lab might be an apparition of W. D. Gaster, the previous royal scientist, but it also could refer to the slender amalgamate that pets Frisk's head if they sleep in one of the beds inside the True Lab. The other three sentences refer to Snowdrake's mother, who is encountered after turning on the ventilation and interacting with the 2nd refrigerator.
 * The screens for Entry Numbers 8 and 18 display a red smile instead of green lines like the other entries, possibly because they tell of how Alphys created Flowey, and Flowey disguises his dark intentions with an innocent smile.
 * In the room with the beds, laying down on the bottom left one for a short while will cause an amalgamate to appear and extend out an arm to pull up the cover over the protagonist.
 * If one backtracks to the lab during the True Pacifist Ending Epilogue, the blue sign and the light switch are swapped.

Laboratorio Verdadero Реальная лаборатория 真正的實驗室