Psychonauts 2 Psychoseismometers Locations

Psychic Machines.

The Psychonauts 2 Psychoseismometers quest is one of the many different side objectives that players can undertake in the game. This one in particular though, takes place in the large open wilderness that surrounds the headquarters of the Psychonauts. So with this Psychonauts 2 Psychoseismometer guide, we’ll show you all of the locations you have to visit for this side quest.

Key Takeaways
  • Complete Hollis Classroom and Hollis Hot Streak Levels.
  • Progress in Motherlobe Part Two to access areas outside the Motherlobe building.
  • Initiate the side quest “Vent All the Psycho Seismometers For Gisu” by talking to Gisu outside.
  • 099 Location: Blastcap Becky Cave, burn the cobweb to obtain the first Psycho Seismometer.
  • H18 Location: Aquato Family Campground, clear the blocked cave entrance for the second Psycho Seismometer.
  • Q33 Location: Inside the area marked Campfire, use the windstream to locate the third Psycho Seismometer.

Information on the Psychoseismometers: 

099 PsychoseismometerLocated at the end of the Blastcap Becky Cave which is covered by a cobweb
H18 PsychoseismometerFound in the Aquato Family Campground through a narrow path that leads to a blocked cave entrance
Q33 PsychoseismometerFound in the Campfire area up in the treetops which can be accesed through a windstream

Vent All the Psychoseismometers For Gisu Walkthrough

Psychonauts 2 Psychoseismometers
The Treehouse.
  • Quest Name: “Vent All the Psychoseismometers For Gisu”
  • Location: Outside the Motherlobe building, look left for a large treehouse on the biggest tree.

Cross the log path, follow the music, and reach the treehouse entrance. Talk to Morris for a bit of interesting dialogue if you want, but the goal here is Gisu. Interacting with her will allow you to start this quest and begin the hunt for the Psychonauts 2 Psychoseismometers

Psychonauts 2 Psychoseismometers
Quest Objectives.

There are three of these in total, and they are spread across The Quarry and the Questionable Area locations. For reference, the map where you talk to Gisu is actually The Quarry, so you don’t have to travel far to reach your first target.

099 Location

Psychonauts 2 Psychoseismometers
Blastcap Becky Cave.

From the entrance of the Motherlobe, walk north across the levitating platforms until you reach the Psychoisolation Chamber. Instead of entering this building, head to the right and grind the first rail you see to reach an elevated cliff that leads into the Abandoned Mine. Don’t go in yet though.

Look around a bit instead and you should see a wooden sign that reads ‘Blastcap Becky Cave’. Next to this should be an enormous cobweb that’s blocking the entrance to the area. Burn it down using your Pyrokinesis ability and head inside for some light platforming across some water.

Psychonauts 2 Psychoseismometers
Psychoseismometer 099.

At the end of this cave, players should find the first of the Psychonauts 2 Psychoseismometers. Interact with it to initiate a challenging combat simulation that will pit Raz against multiple waves of enemies. After all of them have been defeated, the machine will successfully be vented.

H18 Location

Psychonauts 2 Psychoseismometers
Questionable Area.

As soon as the first objective has been completed, exit the Blastcap Becky Cave and enter the Abandoned Mine to your right. Make your way through this until you reach another open location known as the ‘Questionable Area’.

Psychonauts 2 Psychoseismometers
Aquato Family Campgrounds.

Now keep going past the giant lumberjack and diner until you reach a bunch of wooden camp signs. One of these should have an arrow pointing to the right, as well as some text that reads ‘Family Camping.’ Follow this arrow past the broken bridge to reach the Aquato Family Campground. This is where Raz’s family can be found.

These are also the same campgrounds where the ‘Search for Queepie’ optional side mission can be completed. We have a full guide on How to Find Queepie.

Psychonauts 2 Psychoseismometers
Psychoseismometer H18.

As soon as you enter the camp, turn to the left and you should be able to squeeze through an extremely narrow path that leads to a blocked cave entrance.

Clear the rubble with your PSI-Blast, and go inside to find the second of the Psychonauts 2 Psychoseismometers. Once again, you have to interact with the machine for a slightly tougher combat simulation. At the end of this, the venting will have been completed.

Q33 Location

Psychonauts 2 Psychoseismometers

To find the third and final Psychoseismometer, head back to the entrance with the wooden camp signs and this time turn down the path leading to the left. You should eventually reach an archway with another sign that reads ‘Campfire?’  

Psychonauts 2 Psychoseismometers
Light The Fire Pit.

From here, you have to reach up into the treetops. A few different paths can take you there, but the easiest route I’ve found requires the fire pit in the middle of the area to be ignited using Pyrokinesis. This creates an updraft that can be used together with the Levitation ability to carry you up to the platforms.

Psychonauts 2 Psychoseismometers
Psychoseismometer Q33.

You’ll have to do some more jumping at this point, but eventually, you’ll find a wind stream that leads directly to the third Psychonauts 2 Psychoseismometers. Jump into the stream and activate Levitation once again to be carried to the machine. Now you’ll have to participate in the hardest combat simulation yet.

Once all three machines have been vented, go back to the treehouse in the Quarry and speak with Gisu. If you have already beaten the main story, she can instead be found in the campgrounds with your brother Dion

As a reward for completing this quest, players will be rewarded with a bunch of Psitanium as well as the Good Vibes Achievement/Trophy.

This has been eXputer’s Psychonauts 2 Psychoseismometers guide. While you’re here, why not also check out our Psychonauts 2 Review?

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Huzaifa is eXputer's Review Editor, who’s all about RPG games. He’s got several years of experience critically judging games and writing his unbiased thoughts on them. You can also find his content published on sites like Twinfinite & GearNuke. Huzaifa has been gaming for 23+ years, during which he managed to amass 400+ hours on Elden Ring! You can follow his gaming activity on his Xbox and Steam Profiles.

Experience: 5+ years || Previously Worked At GearNuke & Twinfinite || Mainly Covers RPG Guides & Latest Games Reviews

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