Steam Prison Guide & Walkthrough

There are six character routes in this game, and all characters—except Yune and Fin—can be played on the first playthrough in any order you like. However, for the best experience, I recommend the following order:

Eltcreed → Ulrik → Adage → Ines → Yune → Fin

Yune’s route unlocks after obtaining Ulrik’s “Ferrie” ending, meaning it becomes available from the second playthrough onward. Fin, however, can only be played after completing all five LIs routes.

After finishing Fin’s route, the Grand Ending Route will be unlocked.

The reasoning behind this order is that Eltcreed and Ulrik’s routes provide a solid understanding of the overall story, while the subsequent routes gradually uncover the game’s hidden truths.

That said, no route contains major spoilers for the others, so feel free to play in any order if a particular character interests you!

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Game Mechanics

• Choices marked with (+) increase a character’s affection.
• Choices marked with (-) decrease affection.
• Neutral choices (without symbols) do not affect anyone’s affection.

As a general rule, if neither choice increases or decreases affection nor affects route progression or endings, you can pick whichever option you prefer.

Additionally, choosing responses that raise another character’s affection—or neutral options—won’t negatively impact your chosen LI (love interest), as long as you always select the (+) choices for them whenever possible.

For example, if you’re aiming for Eltcreed’s Happy End, but the current choices only affect Ulrik, you can safely pick either the (+) or neutral options without jeopardizing your route. However, (-) options should be avoided, as they may lead to bad endings.

This walkthrough reflects my personal choices, based on the responses I found most enjoyable and the quickest paths to each ending for completing the game.

You can change the main character’s first name, but her last name remains locked due to story reasons. If you prefer, you can keep the default name: Cyrus.

Lastly, each LI’s route contains at least 1 or 2 endings for other characters, but these are still meant to be read on that LI’s route, so don’t skip them!

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Differences Between the Switch and Steam Versions

The main difference between the two versions is that on Steam, Fin’s route must be purchased separately as downloadable content. Once acquired, an additional option will appear on the game’s launch screen:

• Play Steam Prison
• Play Fin’s Route

Do note, however, that you still need to unlock all the other love interests’ best endings before you can access Fin’s route, even if you’ve purchased the DLC.

Other than that, the only remaining difference is in the titles and organisation of the endings. While this doesn’t impact gameplay, the names and menu structure vary slightly between versions. Below is a comparison of how each platform lists them for reference:

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General Guidelines for Raising Affection (Spoiler-Free)

If you’d like to experience the story without a full walkthrough but still want some light guidance on how to make the right choices for each love interest, here’s a spoiler-free overview to help raise affection:

Eltcreed – Respond well to his theatrics and idealistic notions. Be open, gallant, and go along with his whims.

Ulrik – Show resilience and cleverness. He appreciates independence, but also quiet gratitude.

Adage – Be honest and grounded. He respects practicality and sincerity.

Ines – Act with justice, discipline, and respect. He values duty and strength of character.

Yune – Treat him like a human. He favours devotion and sincerity.

Fin – Be kind and emotionally open. He reacts best to trust and warmth.

You’re now ready to begin your journey — or, if you prefer a more guided experience, you can continue reading for a step-by-step walkthrough to unlock every CG and ending in a single playthrough.

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Eltcreed’s Walkthrough

If Eltcreed isn’t your first route and you’ve already created the Everybody’s Common Route SAVE, Depths Common Route SAVE, or Eltcreed’s/Ulrik’s SAVE, you can proceed from there. Otherwise:

START NEW GAME

• Return to pick up bag 
• Of course it is 
• Ask Fin 

SAVE: Everybody’s Common Route

More choices will appear on this screen once the requirements to unlock the final routes (Yune, Fin, Grand Route) are met. You can already create the SAVE file during your first playthrough, so let’s do that.

• That I have to be stronger 
• I couldn’t ask for that 
• How curious (+Eltcreed)

SAVE: The Depths Common Route (Eltcreed/Ulrik/Adage/Ines)

You can return to this save file later to explore other routes without having to replay the earlier choices.

• Thank you (+Ulrik) 
• Ask for details 

Bodyguard Route (Eltcreed & Ulrik)

• I’m fine (+Ulrik) 
• Say I remember (+Eltcreed)
• Very well (+ Eltcreed)
• Thank you (+Ulrik) 
• Of course (+Eltcreed)
• I’m happy (+Eltcreed)
• Was it right to let him go? (+Eltcreed)
• Thank you (+Eltcreed)
• Of course not (+Eltcreed)  

SAVE: Eltcreed’s/Ulrik’s Routes

• I want to know more about him  

Eltcreed’s Route

• Say his name (+Eltcreed)
• This is my job (+Eltcreed)

SAVE 1

• Got it (+Eltcreed)
• I did (+Eltcreed)
• I can accept it (+Eltcreed)
• I’m his girlfriend (+Eltcreed)
• Got it (+Eltcreed)

• I want to rescue him (+Eltcreed)
• I want to eat something nice (+Eltcreed)
• Don’t rush it (+Eltcreed)
• Ask Ulrik 
• Walk a little with Ulrik (+Eltcreed)

              ↓

‘My Queen’ – Eltcreed’s Best End

Now, go check the EXTRA CONTENT you’ve unlocked—this is the best time to do so while this route is still fresh in your mind. The BONUS SCENARIOS include the EPILOGUE of the ‘My Queen’ ending, while the SPECIAL STORY offers a glimpse into the night before each character’s wedding day with Cyrus!

You can also check out the BACKGROUND STORIES, which recount the events that led to the flood and the subsequent birth of the Heights from both the Heights’ and the Depths’ perspectives. These stories complement what we already know without revealing any route spoilers, so feel free to read them now.

Lastly, in the OTHER PERSPECTIVES section, you can relive the scenes you’ve unlocked from the boys’ point of view!

OTHER ENDINGS

LOAD SAVE 1

• I’m your bodyguard (-Eltcreed)
• As someone I protect (-Eltcreed)
• I’m going back (-Eltcreed)
• We hardly know each other (-Eltcreed)
• I want to go with you (-Eltcreed)
• Poor man… (-Eltcreed)
• Please, I don’t want to be a burden (-Eltcreed)

SAVE 2

• Don’t rush it (+Eltcreed)

SAVE 3

• Ask Ulrik
• Walk a little with Ulrik (+Eltcreed)
• I know how to do it (+Eltcreed)

SAVE 4

• Kill him with sword

SAVE 5

• I will be your knight and protect you (+Eltcreed)

              ↓

‘Long Future’ – Eltcreed’s End

LOAD SAVE 2

• You can’t change the past (-Eltcreed)
• Ask Ulrik
• What were you talking about? (-Eltcreed)
• I’m afraid (-Eltcreed)
• Strangle him

              ↓

‘Goodbye, My Knight’ – Ulrik’s End

LOAD SAVE 3

• Find Fin yourself

              ↓

‘The Place I Go Home To’ – Fin’s End

LOAD SAVE 4

• I can’t kill you
• We will be together until the end

              ↓

‘Sweet Recompense’ – Eltcreed’s End

LOAD SAVE 5

• We should escape (-Eltcreed)

              ↓

‘Dance At Sky’s End’ – Eltcreed’s End

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Ulrik’s Walkthrough

If you have already created the Everybody’s Common Route SAVE, the Depths Common Route SAVE, or Eltcreed’s/Ulrik’s SAVE, you can proceed from the closest one to the latter. Otherwise:

START NEW GAME

• Return to pick up bag 
• Of course it is 
• Ask Fin 

SAVE: Everybody’s Common Route

More choices will appear on this screen once the requirements to unlock the final routes (Yune, Fin, Grand Route) are met. You can already create the SAVE file during your first playthrough, so let’s do that.

• That I have to be stronger 
• I couldn’t ask for that 
• How curious (+Eltcreed)

SAVE: The Depths Common Route (Eltcreed/Ulrik/Adage/Ines)

You can return to this save file later to explore other routes without having to replay the earlier choices.

• Thank you (+Ulrik) 
• Ask for details 

Bodyguard Route (Eltcreed & Ulrik)

• I’m fine (+Ulrik) 
• Say I remember (+Eltcreed)
• Very well (+ Eltcreed)
• Thank you (+Ulrik) 
• Of course (+Eltcreed)
• I’m happy (+Eltcreed)
• Was it right to let him go? (+Eltcreed)
• Thank you (+Eltcreed)
• Of course not (+Eltcreed)  

SAVE: Eltcreed’s/Ulrik’s Routes

• He’s just my boss 

Ulrik’s Route

• A job is a job (+Ulrik)
• Life is harsh (+Ulrik)

SAVE 1

• So you want me to watch him die? (+Ulrik)
• We aren’t (+Ulrik)
• I expect nothing less (+Ulrik)
• Does that also make him attractive? (+Ulrik)
• Thank you for saving me (+Ulrik)

SAVE 2

• Good morning (+Ulrik)
• Wing it
• About you (+Ulrik)
• Glad I managed to lie (+Ulrik)
• We can go somewhere that you like (+Ulrik)
• Thank you (+Ulrik)
• He will come back (+Ulrik)

              ↓

‘My Story’ – Ulrik’s Best End

Now, go check the EXTRA CONTENT you’ve unlocked—this is the best time to do so while this route is still fresh in your mind. The BONUS SCENARIOS include the EPILOGUE of the ‘My Story’ ending, while the SPECIAL STORY offers a glimpse into the night before each character’s wedding day with Cyrus!

If you haven’t already, you can also check out the BACKGROUND STORIES, which recount the events that led to the flood and the subsequent birth of the Heights from both the Heights’ and the Depths’ perspectives. These stories complement what we already know without revealing any route spoilers, so feel free to read them now.

Lastly, in the OTHER PERSPECTIVES section, you can relive the scenes you’ve unlocked from the boys’ point of view!

OTHER ENDINGS

LOAD SAVE 1

• I want to help anyway (-Ulrik)
• I hate him (-Ulrik)
• I don’t think I can do that (-Ulrik)
• How rude (-Ulrik)
• It damn well should’ve (-Ulrik)

SAVE 3

• What are you doing here? (-Ulrik)
• Tell the truth

              ↓

‘One-Winged Bird’ – Eltcreed’s End

If you’ve been following this walkthrough and played Eltcreed’s route before Ulrik’s, you should now have unlocked all three of his extra scenarios. This is the perfect time to head to the EXTRA CONTENT menu and read them under his CHARACTER PROFILE. Congratulations on completing his route!

LOAD SAVE 2

• What are you doing here? (-Ulrik)
• Wing it
• About the Heights (-Ulrik)
• Glad I could be useful (-Ulrik)
• Don’t force yourself (-Ulrik)

SAVE 4

• Thank you (+Ulrik)
• I want to escape (-Ulrik)

              ↓

‘“Ferrie”’ – Ulrik’s End

This ending unlocks Yune’s route, but I suggest saving it for after you’ve completed both the Bodyguard Routes and the Prisoner Routes, as it contains the most spoilers.

LOAD SAVE 3

• Good morning (+Ulrik)
• Tell the truth

              ↓

‘Final Page’ – Ulrik’s End

LOAD SAVE 4

• I can’t take it (-Ulrik)

              ↓

‘Words Unheard’ – Ulrik’s End

If you’ve been following this walkthrough and played Ulrik’s route after Eltcreed’s, you should now have unlocked all three of his extra scenarios. This is the perfect time to head to the EXTRA CONTENT menu and read them under his CHARACTER PROFILE. Congratulations on completing his route!

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Adage’s Walkthrough

If you have already created the Everybody’s Common Route SAVE, the Depths Common Route SAVE, or Adage’s/Ines’s SAVE, you can proceed from the closest one to the latter. Otherwise:

START NEW GAME

• Return to pick up bag 
• Of course it is 
• Ask Fin 

SAVE: Everybody’s Common Route

More choices will appear on this screen once the requirements to unlock the final routes (Yune, Fin, Grand Route) are met. You can already create the SAVE file during your first playthrough, so let’s do that.

• That I have to be stronger 
• I couldn’t ask for that 
• How curious (+Eltcreed)

SAVE: The Depths Common Route (Eltcreed/Ulrik/Adage/Ines)

You can return to this save file later to explore other routes without having to replay the earlier choices.

• Thank you (+Ulrik) 
• Turn down after all 

Warder Route (Adage & Ines)

• Thank you very much (+Adage)
• Yes, it is (+Ines) 

SAVE: Adage’s/Ines’s Routes

• I still want to live independently
• I will do better next time (+Ines)
• That was the right decision (+Adage) 

Adage’s Route

• I can do it (+Adage)

SAVE 1

• It’s bad (+Adage)
• Can you see them sometimes? (+Adage)

SAVE 2

• Let’s eat together (+Adage)
• Good work (+Adage)
• I wanted to let you sleep (+Adage)
• Please take it away (+Adage)
• Play along (+Adage)
• Introduce myself fluently (+Adage)

SAVE 3

• Got it (+Adage)
• You have no social graces (+Adage)
• Talk about having met Fin
• Thank you Adage (+Adage)

SAVE 4

• You still had to meet him (+Adage)
• That’s immoral (+Adage)

              ↓

‘Sacrificing Me’ – Adage’s Best End

Now, go check the EXTRA CONTENT you’ve unlocked—this is the best time to do so while this route is still fresh in your mind. The BONUS SCENARIOS include the EPILOGUE of the ‘Sacrificing Me’ ending, while the SPECIAL STORY offers a glimpse into the night before each character’s wedding day with Cyrus!

If you haven’t already, you can also check out the BACKGROUND STORIES, which recount the events that led to the flood and the subsequent birth of the Heights from both the Heights’ and the Depths’ perspectives. These stories complement what we already know without revealing any route spoilers, so feel free to read them now.

Lastly, in the OTHER PERSPECTIVES section, you can relive the scenes you’ve unlocked from the boys’ point of view!

OTHER ENDINGS

LOAD SAVE 1

• It’s good (-Adage)
• Why were you sent to the Depths? (-Adage)
• You’re like a parent (-Adage)

              ↓

‘Good Night, Assistant’ – Adage’s End

LOAD SAVE 3

• No need (-Adage)
• Please tell me (-Adage)

SAVE 5

• Talk about having met Fin
• Thank you, but I don’t need it (-Adage)

SAVE 6

• Glissade is odd
• You’re lying

              ↓

‘“Roselite”’ – Ines’s End

LOAD SAVE 4

• I’m sorry (-Adage)
• Like father, like son (-Adage)

              ↓

‘Flicker, Die’ – Adage’s End

LOAD SAVE 5

• Don’t talk about having met Fin
• Are you sure?

              ↓

‘Things to Give’ – Fin’s End

LOAD SAVE 6

• I’m sorry (-Adage)

              ↓

‘“Recessive”’ – Adage’s End

LOAD SAVE 2

After clearing Adage’s route, an additional scene featuring Ines’s and Fin’s perspectives will be unlocked.

• You’re like a teacher

              ↓

Collect additional scenes.

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Ines’s Walkthrough

If you have already created the Everybody’s Common Route SAVE, the Depths Common Route SAVE, or Adage’s/Ines’s SAVE, you can proceed from the closest one to the latter. Otherwise:

START NEW GAME

• Return to pick up bag 
• Of course it is 
• Ask Fin 

SAVE: Everybody’s Common Route

More choices will appear on this screen once the requirements to unlock the final routes (Yune, Fin, Grand Route) are met. You can already create the SAVE file during your first playthrough, so let’s do that.

• That I have to be stronger 
• I couldn’t ask for that 
• How curious (+Eltcreed)

SAVE: The Depths Common Route (Eltcreed/Ulrik/Adage/Ines)

You can return to this save file later to explore other routes without having to replay the earlier choices.

• Thank you (+Ulrik) 
• Turn down after all 

Warder Route (Adage & Ines)

• Thank you very much (+Adage)
• Yes, it is (+Ines) 

SAVE: Adage’s/Ines’s Routes

• I want to lay low
• I will do better next time (+Ines)
• That was the right decision (+Adage) 

Ines’s Route

• I would be glad to (+Ines)
• I had a pleasant time (+Ines)
• It’s good that we met on the street (+Ines)

SAVE 1

• Thank you (+Ines)
• It is delicious, after all (+Ines)
• I will work hard (+Ines)
• I think he’s fun (+Ines)
• Thank you (+Ines)
• It was bad regardless (+Ines)
• I regret nothing (+Ines)
• It’s unforgivable (+Ines)

SAVE 2

• Trust Sir Ines

SAVE 3

• I wish we had met before (+Ines)
• I’ll go to sleep (+Ines)
• Good idea (+Ines)
• I understand how you feel (+Ines)
• Lives in a different world (+Ines)
• Let me have your back (+Ines)
• Don’t let go of hope (+Ines)

              ↓

‘“Hounds”’ – Ines’s Best End

Now, go check the EXTRA CONTENT you’ve unlocked—this is the best time to do so while this route is still fresh in your mind. The BONUS SCENARIOS include the EPILOGUE of the ‘“Hounds”’ ending, while the SPECIAL STORY offers a glimpse into the night before each character’s wedding day with Cyrus!

If you haven’t already, you can also check out the BACKGROUND STORIES, which recount the events that led to the flood and the subsequent birth of the Heights from both the Heights’ and the Depths’ perspectives. These stories complement what we already know without revealing any route spoilers, so feel free to read them now.

Lastly, in the OTHER PERSPECTIVES section, you can relive the scenes you’ve unlocked from the boys’ point of view!

OTHER ENDINGS

LOAD SAVE 1

• This makes me nervous (-Ines)
• That’s so unexpected (-Ines)
• It will tire me out (-Ines)
• I think he’s funny (-Ines)
• Of course it is (-Ines)
• He’s being deceived (-Ines)

              ↓

‘Follow Me’ – Adage’s End

If you’ve been following this walkthrough and played Adage’s route before Ines’s, you should now have unlocked all three of his extra scenarios. This is the perfect time to head to the EXTRA CONTENT menu and read them under his CHARACTER PROFILE. Congratulations on completing his route!

LOAD SAVE 2

• Maybe something went wrong
• Try to block

              ↓

‘Hound Fangs’ – Ines’s End

LOAD SAVE 3

• Your old life sounds like fun (-Ines)
• I can’t sleep yet (-Ines)
• I’ll show you the way (-Ines)
• You’re being weird (-Ines)

SAVE 4

• Is a well-meaning man
• Your orders? (-Ines)
• Try to resist (-Ines)

              ↓

‘Semper Fi’ – Ines’s End

LOAD SAVE 4

• I don’t know him well (-Ines)

              ↓

‘Cold Blood’ – Ines’s End

If you’ve been following this walkthrough and played Ines’s route after Adage’s, you should now have unlocked all three of his extra scenarios. This is the perfect time to head to the EXTRA CONTENT menu and read them under his CHARACTER PROFILE. Congratulations on completing his route!

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Yune’s Walkthrough

Yune’s route is unlocked by obtaining Ulrik’s “Ferrie” ending, which is found in Ulrik’s route. If you have already created the Everybody’s Common Route SAVE, you can proceed from there. Otherwise:

START NEW GAME

• Return to pick up bag 
• Of course it is 
• Ask Fin 

SAVE: Everybody’s Common Route

As mentioned in the first four routes, the choices for the last three routes will appear on this screen once you meet the requirements to unlock the final routes (Yune, Fin, and the Grand Route).

• That the Heights are a wonderful place 
• Resist being sent down

Yune’s Route

• Of course (+Yune)
• If you insist (+Yune)
• May I really have this? (+Yune)

Servant Route

• I also eat a lot (+Yune)

SAVE 1

• I keep my promises (+Yune)
• That will be rough (+Yune)
• About sixteen years old (+Yune)
• Talk to Fin
• I will deal with him (+Yune)
• I would love to (+Yune)
• That sounds good (+Yune)
• He’s my old partner (+Yune)
• I’m glad he’s still alive (+Yune)
• Let me think about it (+Yune)

SAVE 2

• It’s going to work out (+Yune)
• Please attend (+Yune)

              ↓

‘My Time’ – Yune’s Best End

Now, go check the EXTRA CONTENT you’ve unlocked—this is the best time to do so while this route is still fresh in your mind. The BONUS SCENARIOS include the EPILOGUE of the ‘My Time’ ending, while the SPECIAL STORY offers a glimpse into the night before each character’s wedding day with Cyrus!

If you haven’t already, you can also check out the BACKGROUND STORIES, which recount the events that led to the flood and the subsequent birth of the Heights from both the Heights’ and the Depths’ perspectives. These stories complement what we already know without revealing any route spoilers, so feel free to read them now.

Lastly, in the OTHER PERSPECTIVES section, you can relive the scenes you’ve unlocked from the boys’ point of view!

OTHER ENDINGS

LOAD SAVE 1

• I’m disappointed (-Yune)
• That’s dangerous (-Yune)
• About four thousand years old (-Yune)

SAVE 3

• Talk to Fin

SAVE 4

• I will deal with him (+Yune)
• I would love to (+Yune)
• That sounds good (+Yune)
• He’s my old partner (+Yune)
• I’m glad he’s still alive (+Yune)

SAVE 5

• Let me think about it (+Yune)
• I’m too worried (-Yune)

SAVE 6

• Stay with him until he dies

              ↓

‘Lingering Scent’ – Yune’s End

LOAD SAVE 2

• I’m too worried (-Yune)
• This isn’t like you (-Yune)

              ↓

‘Results Awaited’ – Yune’s End

LOAD SAVE 3

• Don’t talk to Fin
• He’s dangerous
• We need to return to the Heights (-Yune)
• No (-Yune)

              ↓

‘Eternal Thread’ – Fin’s End

LOAD SAVE 4

• Let’s run away (-Yune)

              ↓

‘Promise Kept’ – Yune’s End

LOAD SAVE 5

• Is there no other way? (-Yune)

              ↓

‘Punishment’ – Yune’s End

LOAD SAVE 6

• End relationship

              ↓

‘Let’s Meet Again’ – Yune’s End

Now head to the EXTRA CONTENT menu and read Yune’s extra scenarios under his CHARACTER PROFILE. Congratulations on completing his route!

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Fin’s Walkthrough

Fin’s route is unlocked after completing all five other routes: Eltcreed’s, Ulrik’s, Adage’s, Ines’s, and Yune’s. If you have already created the Everybody’s Common Route SAVE, you can proceed from there. Otherwise:

START NEW GAME

• Return to pick up bag 
• Of course it is 
• Ask Fin 

SAVE: Everybody’s Common Route

As mentioned in the first four routes, the choices for the last three routes will appear on this screen once you meet the requirements to unlock the final routes (Yune, Fin, and the Grand Route).

• What about you, Fin? 
• Consider it

Fin’s Route

• I’m sorry I didn’t understand how you felt (+Fin)

Warder Route

• I missed you (+Fin)
• All right (+Fin)
• Just a little longer (+Fin)
• I’m rooting for you (+Fin)
• This takes me back (+Fin)

SAVE 1

• My heart is fluttering (+Fin)
• … (+Fin)
• I treasure him (+Fin)

              ↓

‘I love you’ – Fin’s Best End

Now, go check the EXTRA CONTENT you’ve unlocked—this is the best time to do so while this route is still fresh in your mind. The BONUS SCENARIOS include the EPILOGUE of the ‘I love you’ ending, while the SPECIAL STORY offers a glimpse into the night before each character’s wedding day with Cyrus!

If you haven’t already, you can also check out the BACKGROUND STORIES, which recount the events that led to the flood and the subsequent birth of the Heights from both the Heights’ and the Depths’ perspectives. These stories complement what we already know without revealing any route spoilers, so feel free to read them now.

Lastly, in the OTHER PERSPECTIVES section, you can relive the scenes you’ve unlocked from the boys’ point of view!

OTHER ENDINGS

LOAD SAVE 1

• It reminds me of my father (-Fin)
• Good colleagues (-Fin)

SAVE 2

• I treasure him (+Fin)

              ↓

‘Dying Voice’ – Fin’s End

LOAD SAVE 2

• None of your business (-Fin)

              ↓

‘Together Till the End’ – Fin’s End

Fin’s CHARACTER PROFILE last extra scenario will unlock after completing the GRAND ENDING route, so let’s keep playing for now!

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Grand Ending’s Walkthrough

If you have already created the Everybody’s Common Route SAVE, you can proceed from there. Otherwise:

START NEW GAME

• Return to pick up bag 
• Of course it is 
• Ask Fin 

SAVE: Everybody’s Common Route

As mentioned in the first four routes, the choices for the last three routes will appear on this screen once you meet the requirements to unlock the final routes (Yune, Fin, and the Grand Route).

• That I have to be stronger
• Leave room with sword

Grand Ending’s Route

• Resist

              ↓

‘Towards the Morrow’ – Final Ending

Now you can check out Fin’s CHARACTER PROFILE extra scenarios, as well as any other scenarios you might not have read yet. Congratulations on beating the game!

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