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Subsurface Circular Chapter 5: Detection - Changing moods for Detective Kappa puzzle solution

How to complete Subsurface Circular's fifth chapter.

Subsurface Circular Chapter 5: Detection follows on from the completion of Chapter 4.

This page features a spoiler-free explainer on how to complete the chapter, including a changing moods for Detective Kappa puzzle solution.

If you're after help with other parts of the game, consult our Subsurface Circular walkthrough.

Starting Chapter 5: Detection

Speak to Fabricator Iota Five, selecting all the top options. Continue to do even when the focus points open up, adding 'Over production' to your list.

Feel free to talk through the options, but whenever you're done, back out and the Fabriactor will get off at the next stop. Two Detectives will get on.

Chat to the right one, Detective Kappa Four One, adding the focus point 'Detectives' and the objective 'Avoid complications'.

Answer the questions how you see fit until the line of questions run out, and the Tek is calm and stoic whenever you ask about its mood.

Changing moods for Detective Kappa

Turn your attention to Detective Support Kappa Four Three next, and you'll be able to respond to 'I answered your partner's questions'. Take the top options until the focus points open up, learning you can change this Tek's emotions, which will change the way the other feels too.

Select 'Human on Tek violence', changing its emotions to angry, and opening the door for you to ask the other Detective questions.

Approach Detective Kappa Four One on the right again, and use focus point 'Disappearances', adding '16' to your list. Go back to the left-most Detective and use '16' - changing it to an investigative mood.

Return to Detective Kappa Four One on the right once more, and use 'Over production', adding 'Errors' to your focus point list.

Finished this chapter? Next up is Chapter 6: Reboot - Confession words, answers to Xi's job, second tallest Tek and farmer colour

Go back to the left detective, and use 'Detectives', changing the right one's state to glowing. Use '16' on the right one, and it'll change its state to a permanent default state - in other words, no more going back and forth.

Use the 'Over production' focus point, then choice any responses you please until the chapter ends.