“Now, you take that PSI Core there, and put it together with nine PSI Cards, and you'll have yourself a brand new PSI Challenge Marker, which is worth a whole rank ya know!”
–Chef Cruller
A PSI Core is an item that can be combined with nine PSI Cards to make a PSI Challenge Marker.
Psychonauts[]
“When Whispering Rock first started, there were PSI Challenge Markers all over the place. But it has been a long time, and most have fell apart. Raz finds many PSI cards on his adventures, and he can turn these into Challenge Markers with a PSI Core from the camp store.”
–Old Psychopedia description
They can only be acquired by purchasing them at the camp store in the Main Lodge. They cost 10 arrowheads. Raz can combine PSI Cores with PSI Cards in Ford's Sanctuary.
Psychonauts 2[]
PSI Challenge cores and PSI cores return in Psychonauts 2. PSI Cores are purchasable from the Otto-Matics by using psitanium. After purchasing the first one, which is free due to being part of the tutorial about purchasing items, every subsequental purchase will require 25 psitaninum.
Gallery[]
Psychonauts[]
Textures[]
PSI Core texture sheet.
Psychonauts 2[]
Textures[]