I'm home...

This page contains heavy spoilers about Mogeko Castle. If you wish not to be spoiled, do not read this article unless you have played the game. Perhaps, read something else instead!

For the location in the game, see Mogeko Castle (Location).
Yonaka Kurai, an extremely ordinary high schooler. She takes the usual train home.
Though it’s all ordinary, today is somewhat special. Today, her beloved brother comes home.
But when she wakes, the train has stopped at an unfamiliar station…
Mogeko Castle


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Japanese Title Mogeko Castle
Romaji Title Mogeko Castle
Media Information
Type of Media Game
Series Mogeko Castle
Engine Original: RPG Maker 2000
RPG Maker VX Ace
Platforms Windows
MacOS (via RPGHub)
Release Date Original: April 1, 2012
Remake: March 5, 2014
Latest Update JP:
Version 1.13 (08/03/2018)
Other versions:
Version 1.12 (06/04/2014)
Official Page funamusea.com
Pages of Official Translations
Chinese (simplified) 丝绮拉工作室
Chinese (traditional) sikiv
English vgperson
Indonesian Shiyori NekoChi
Italian rupicola team
Portuguese Zero Corpse
Spanish Tsumin

Mogeko Castle is Deep-Sea Prisoner's first game, developed in RPG Maker. It was released on April 1st, 2012 on RPG Maker 2000. A remake made in RPG Maker VX Ace was released in early 2014.

Like Deep-Sea Prisoner's third game, Wadanohara and the Great Blue Sea, Mogeko Castle is rated by Deep-Sea Prisoner themselves as for being for age 15+; however, this age rating is based on Japanese ratings. The rating may vary from country to country, and hence, an age rating of 18+ may be more appropriate. This game contains very violent imagery, and implied sexual assault. Unlike Wadanohara and the Great Blue Sea, these elements are apparent from the start of the game, and are prevalent throughout the game as a whole.


The game starts off with a Mogeko, a cat-like creature, watching over someone in bed, presumably convalescing from illness. The Mogeko decides to tell them a story that's "very amusing, sad... violent, [and] pervy." From there, the game officially begins.


Yonaka Kurai is an ordinary high school student, on a train ride heading home; at home she anticipates her brother, Shinya Kurai, who she hasn't seen in a long time. Aside from a girl with flashy hair and a girl with lifeless eyes, Yonaka finds herself alone on the train. Without anything to do, except for wait until the train reaches the next station, Yonaka decides to nod off and sleep until she reaches her destination.

Eventually, Yonaka is woken up by an announcement - an announcement declaring that the train has reached its final stop - an empty station - by the name of Mogeko station. Now truly alone and confused, she disembarks from the train and wanders around, hoping to find others. Soon she wanders down the only path leading away from the station. Continuing down the path, Yonaka has suspicions that someone is observing her, and she momentarily sees a faint silhouette. Undeterred in her path, Yonaka continues going down her path and enters a forest. She then comes into contact with the being who had been watching her - a Mogeko. The Mogeko identifies Yonaka as a high school girl, and speaks about wanting to have "fun" with her. With a cry, the Mogeko summoned more Mogekos to the forest, all of whom want to "have fun" with Yonaka. The Mogekos begin to chase Yonaka through the forest as she runs away.

After outrunning the crowd of Mogekos, Yonaka comes close to a huge castle: Mogeko Castle. Going down the long path to the castle, there are many statues warning Yonaka of the potential danger of the castle. With nowhere else to go, she decides to enter the castle.

Once inside the castle, the entrance doors close and Yonaka finds herself unable to leave from where she came. Almost cornered by a crowd of Mogekos, she escapes from their clutches when they all begin to argue about "who will be Yonaka-tan's first time." Exploring through the rest of the first floor she comes to meet a Mogeko who wishes to lend her help - Somewhat Strange Mogeko.

Somewhat Strange Mogeko explains to Yonaka thus: Mogeko Castle is located in a different world from her own. If Yonaka wishes to return to her world, she may be able to find her solace at the top of the castle - at the top of the castle is a door that may return her home. After counselling Yonaka to ascend the floors of the castle, Somewhat Strange Mogeko gifts her a big knife to stab Mogekos to death if need be. Taking Somewhat Strange Mogeko's advice, Yonaka heads to the second floor.

On the second floor, Yonaka encounters more of her Mogeko admirers, who resume their chase of her. Escaping from her chasers, Yonaka finds herself in a strange flowery place, inhabited mostly by Mogeko larvae and flutterbys. Here, Yonaka meets Prosciutto Fairy - the guardian of the second floor. Prosciutto Fairy, much like Somewhat Strange Mogeko, decides to help Yonaka; they give her a key to a locked door. Past the locked door is a path that leads her to a ladder, which takes her to the third floor.

Once on the third floor, Yonaka explores for a bit until she comes across a thick, heavy book explaning what a defective Mogeko is. Whilst reading it, a group of Mogekos find her, and she falls into their clutches. The group of Mogekos take her to a prison cell, locking her up with another prisoner - Defect Mogeko, a "defective" Mogeko. After being released from his restraints by usage of the key gifted to Yonaka - revealed to be able to unlock many of the locks in the castle - Defect Mogeko becomes Yonaka's travel companion, vowing to help her escape from the castle.

Journeying further into the third floor, Yonaka and Defect Mogeko come to meet the third floor's guardian - Blood Spirit. Blood Spirit assists the two in getting to the fourth floor, as the upper floors are no longer reachable by stairs, by using the power of one of his servants.

Reaching the fourth floor full of depressed and downtrodden Mogekos, Yonaka and Defect Mogeko nearly make it to the elevator that will take them to the castle's fifth floor when they meet the new fourth floor 'guardian': Moge-ko. Moge-ko, expressing her desire to make Yonaka her new toy, begins a chase. Yonaka and Defect Mogeko manage to elude her, making their way to a fluffy pink room: Moge-ko's room.

Next to Moge-ko's room is her torture chamber, which is where Yonaka and Defect Mogeko find the dying former guardian of the fourth floor - Hasu. Before taking his final breath and ascending to Prosciutto Paradise (where dead Mogekos go), Hasu reveals to them the existence of a passage under Moge-ko's bed that will take them to the fifth floor of Mogeko Castle.

The two move on to the fifth floor, where they go to a hospital in search for some weapons for defense. Navigating around the hospital, Yonaka and Defect Mogeko eventually reach a room full of weapons on the fourth floor of the hospital. After taking a rocket launcher, they continue on in their journey to the next floor.

While walking down a long hallway, Defect Mogeko decides to tell Yonaka about the history and creation of the castle: in the beginning, the king of Mogekos was lonely, and decided to build a castle. After the creation of the castle he created seven Special Mogekos, one to serve as a guardian for each of the castle's seven floors, and many more Mogekos.

Encountering Moge-ko again, Moge-ko resumes her chase from before; this time, a large Mogeko amalgamation monster gives chase as well. Yonaka and Defect Mogeko are nearly caught again, until a Mogeko leads them to safety - Moffuru.

Moffuru assists the two to the sixth floor of the castle, where they meet the king of the castle, King mogeko, in his throne room. Defect Mogeko and King Mogeko exchange some words, with each vowing to kill the other, until Defect Mogeko ends their exchange by firing a rocket launcher.

The two traverse further into the sixth floor, where they find the library, which had been presumably destroyed by King mogeko. However, its possible destruction had been sensed by the chief librarian and was subsequently moved to another location. Defect Mogeko leads Yonaka to a hidden door, which brings them to the next portion of the sixth floor.

The two then meet the chief librarian and guardian of the sixth floor, Mogecuckoo. With the help of Mogecuckoo's warp egg, Yonaka and Defect Mogeko are teleported to the seventh and final floor of the castle, but one unforeseen consequence occurs - Mogecuckoo is injured protecting the two from King Mogeko's intervention of the teleportation.

Once again, Yonaka is chased by a crowd of Mogeko - this time larger than the ones before - but she manages to elude them. Gunfire is opened upon the two, and Defect Mogeko shields Yonaka with his body. The shooter is revealed to be King Mogeko, who has found them. Using tear gas Yonaka and Defect Mogeko flee.

Once alone in an empty prison cell, Defect Mogeko reveals that he is the last special Mogeko - formerly known as Nega-Mogeko, and reveals his ties to King Mogeko. Now too wounded to continue on in his quest with Yonaka, Defect Mogeko sacrifices himself, slaying many Mogekos before his defeat by King Mogeko.                                                        

From the window of the prison cell, Yonaka can only watch as King Mogeko executes Defect Mogeko via burning while crucified. Now alone, Yonaka continues onward towards the seventh floor of the castle.                                                        

On the seventh floor, Yonaka passes through a doorway, and suddenly finds herself on the bus that she always takes home. Questioning if the whole ordeal was a dream, she affirms to herself that it was not, with the existence being confirmed by her hand soaked with blood.                                                        

Once the bus stops Yonaka walks home, finally reaching the destination she had been yearning for since the beginning of her train ride. For the first time in years, she sees her brother - Shinya Kurai - and the two greet each other in the living room of their home. But all is not well; their living room is covered in blood and flesh.                                                        

Shinya begins to describe the murder he committed prior to Yonaka's return - presumably of their parents - and how much they "thrashed." Turning to Yonaka, he tells her that "it's now [her] turn." Shinya begins to chase Yonaka, and she flees to the bus stop near her home and boards the bus there . The bus is revealed to be driven by a Mogeko, and Yonaka is taken back to the castle.                                                        

Wandering into the castle Yonaka finds herself before a door - the Door of Truth. Two path options may be given to Yonaka - either the Path of Paradise or the Path of Falsehood. There are two achievable endings: a Normal ending, and a True ending.                                                        

Endings in Mogeko Castle

Bad End 0: Everlasting Dream

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If Yonaka chooses to not enter Mogeko Castle and instead decides to search for another way to return home, she will be cornered by a crowd of Mogeko. Unable to escape, the Mogekos get to "have fun" with her.

It is implied by dialogue and sound effects that Yonaka is sexually assaulted, although no imagery is shown.

Bad End I: Assimilation

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If Yonaka chooses to unleash the madness of the Mad Mogeko found on the castle's first floor, she will be engulfed by the darkness of the room. After she is engulfed, she becomes "one with the darkness of Mogeko Castle."

Bad End II: Insects

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If Yonaka chooses to enter a dangerous door found on the castle's second floor, she will be swarmed by countless Mogeko larvae. It is implied that Yonaka's ovarian eggs are used to hatch more Mogekos, as Mogekos are hatched from eggs.

Bad End III: Meat Party

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If Yonaka toggles the switch that opens the large cage housing Mad Mogeko on the castle's third floor, she, along with Defect Mogeko, will be devoured alive by hundreds of Mad Mogeko.

Bad End IV: Toy

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If, after Hasu's ascension on the castle's fourth floor, Yonaka backtracks the hall before Moge-ko's room, she and Defect Mogeko will be ambushed by Moge-ko and a group of Mogeko. The two are then taken to Moge-ko's torture room, where Defect Mogeko is brutally murdered and mutilated until his face is unrecognizable. Instead of killing Yonaka as she initially planned, Moge-ko decides instead to "take care" of Yonaka and make Yonaka her new toy.

Bad End V: Parasite

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If Yonaka chooses to touch the Blancfluff Mogeparasite on the castle's fifth floor, the parasite will leap into Yonaka's mouth and infiltrate her body. Squirming around, the parasite turns Yonaka into a Mofuko, an incurable and fatal ailment.

Bad End? VI: Elopement

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If Yonaka chooses to elope with Defect Mogeko outside of the library on the castle's sixth floor, she will proclaim to him that her brother Shinya "no longer matters to her." Defect Mogeko and Yonaka then elope from the castle, with Yonaka to never return to the human world.

Years later, after their elopement from the castle, the two reminiscence over a sunset, and vow to never leave each other. The two then hug, cutting off to the Bad End screen, which is notably different from the others: it lacks the common black and red Bad End box, and has a more colorful sketch compared to other Bad End screens.

Bad End VII: Ficticious Truth

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If Yonaka is caught by her brother Shinya while he chases her, Shinya will proceed to murder her with a knife. The screen cuts to black as Yonaka screams and is stabbed countless times, until she eventually dies from exsanguination.

Normal Ending: Yonaka Castle

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If Yonaka kills at least one Special Mogeko, she will be given the option of proceeding through the Path of Paradise, which will trigger the normal ending.

Happy End

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If Yonaka doesn't kill any Special Mogekos, she will be given the option of proceeding through the Path of Falsehood, which will trigger the true ending; the true ending may also be seen by continuing after the Normal ending has been seen, which will also yield the option of proceeding through the Path of Falsehood.

The Door of Truth returns Yonaka home, and once again she is confronted by Shinya. This time she doesn't run from him, instead deciding to stay with him. Yonaka comes close to her brother and draws her knife, stabbing him. She becomes distraught, having expected him to dodge her stabbing. The two exchange their last words, reconciling the issues between them, before Shinya finally dies.

The True ending ends with Yonaka proclaiming that she is now "truly happy."

At the end of the credits for the True Ending, the game cuts back to the beginning shot of the game. The Mogeko in the beginning, who had been reading to someone in bed, is revealed to be King Mogeko. It is revealed that the person in bed is Yonaka, implied to have attempted suicide by swallowing pills. She is unresponsive to any of King Mogeko's provocations, lying in bed in a comatose state.


The original Mogeko Castle had graphics similar to The Gray Garden and Wadanohara and the Great Blue Sea, all of which had been made on RPG Maker 2000. It played in the same manner - with battle mechanics.

The remake of Mogeko Castle removed the battle mechanics. The game is explored using the arrow keys. Much of the game can be interacted with using either the Space, Enter, or Z key to confirm actions. The inventory can be opened with the Escape or X key, and navigated using the arrow keys. Each item in the inventory has a picture inscribed in a bubble.

 Easter Eggs

  • Before Yonaka enters the castle, she must wander down a path over the castle's moat. The castle path is lined with stone Mogeko statues inscribed with one quote: "Abandon all hope, ye who enter here." This is in reference to a line found in the poem The Divine Comedy, the line of which is inscribed upon the gate of Hell.
  • On the first floor of the castle, a reference to the Sunahama can be found in the form of a room filled with boxes labelled "sunahamazon.co.jp", which is also a reference to the Japanese branch of the shipping company Amazon.
  • Several characters from Deep-Sea Prisoner's other series make cameo appearances.
    • On the Mysterious Train, Nataka Kurokawa and Imika Yuhjima make a cameo appearance, although they are respectively known as "Girl with Lifeless Eyes" and "Girl with Flashy Hair".
    • A letter from Sullivan to Kurotsuno can be found on the first floor of the castle. Written while being chased by Mogekos, Sullivan professes that he's been a failure of a father and that he loves her.
    • Wadanohara makes a cameo appearance in the form of a miniature figurine, which may be found on top of a shelf in Somewhat Strange Mogeko's room. She also makes a cameo in the General Hashasky's Great Adventure trailer, in the form of a Mogeko named "Mogenohara" dressed up as her.
    • Yosafire makes a cameo appearance in the form of a miniature figurine, one of which can be found on top of a shelf in Somewhat Strange Mogeko's room, the other on top of a shelf on the fourth floor of the castle. She also makes a cameo in the General Hashasky's Great Adventure trailer, in the form of a Mogeko named "Mogefire" dressed up as her.
    • Kurotsuno makes several cameo appearances in the form of several life-sized stone statues scattered around Mogeko Castle; she also personally appears in some of the rooms of the castle, searching for her lost cell-phone.
    • Hanten and Met make a cameo appearance together, both of them searching for Kurotsuno on the fourth floor of the castle.
    • Collectively Kurotsuno, Hanten, and Met make a cameo appearance on the fifth floor of the castle, after Kurotsuno finds her phone.
  • On the third floor of the castle, a cameo for Ice Scream can be found in the form of an 'anime' being broadcasted on a television screen.
    • Similarly, on the fifth floor of the castle, a cameo for The Gray Garden can be found in the form of 'anime' being broadcasted on a television screen.
  • On the third floor of the castle, Yonaka can choose to sleep with a Mogeko. If she does, she will "[spend] a sweet night with the Mogeko". This changes Yonaka's Student ID: prior to sleeping with the Mogeko, her ID reads that she is a "Female Student." After sleeping with the Mogeko, the ID reads that she is a "Woman."
  • Within the game, several paintings from some of Deep-Sea Prisoner's other games can be found:
    • On the third floor of the castle, a painting of Moge-kov and Mogekov Hashasky can be found in the room of the Mogeko Yonaka can potentially sleep with.
    • On the fifth floor of the castle, two paintings that can be found in the bonus room of Wadanohara and the Great Blue Sea can be found hanging on the hospital's wall.
    • On the sixth floor of the castle, one painting can be found in hanging on the wall of the library's foyer.
  • Yonaka's menu portrait changes throughout the game:
    • Upon Defect Mogeko's death, she begins to shed tears in her portrait.
    • After returning home, her portrait changes once again; instead of crying, she instead has a stoic glare on her face. Unlike previous portraits, her eyes can be see - coloured gray rather than her typical black with white pupils.


  • The original version of Mogeko Castle had battle mechanics, like those found in The Gray Garden and Wadanohara and the Great Blue Sea. However, for unknown reasons, the mechanic was removed from the remake.
  • Mogeko Castle makes frequent references to Christian imagery.
    • On the fourth floor of the castle, a crude "painting" of a Mogeko holding a Mogeko while surrounded by Mogeko angels can be found; this is in reference to the Virgin Mary holding the Christian Messiah, Jesus Christ.
    • Three paintings parodying famous paintings depicting events in the Bible can be found in the game. 
  • Defect Mogeko tells Yonaka that the third floor is the last floor accessible by the stairs; this is false as, to reach the seventh floor, Yonaka uses stairs.

Preview Images

Original Previews

Remake Previews


Mogeko Castle
Mogeko Castle Characters
Major Defect Mogeko · King mogeko · Moge-ko · Mogeko · Shinya Kurai · Yonaka Kurai
Minor Blood Spirit · Hashasky · Hasu · Met · Moffuru · Mogecuckoo · Mogekov Hashasky · Nega-Mogeko · Prosciutto Fairy · Somewhat Strange Mogeko
Cameo Etihw · Froze · Hanten · Idate · Imika Yuhjima · Kcalb · Kurotsuno · Macarona · Mafuyu · Moge-kov · Nataka Kurokawa · Pancetta · Peraco · Rawberry Preserves · Rock · Rocma · Shirogane · Sunosan · Sullivan · Yosafire · Yukisada · Wadanohara

Deep-Sea Prisoner
General Deep-Sea Prisoner · funamusea.com
Deep-Sea Prisoner's Works
Games Carnival Rhythm* ·A Paradise Submerged In Darkness* · Devil Girl Ivlin* · Garden Gray The · General Hashasky's Great Adventure* · Ice Scream · Mogeko Castle · The End of the Wonderland* · The Gray Garden · Wadanohara and the Great Blue Sea (Reboot)
Manga Obsolete Dream · Seaside Dispatches 1 · Seaside Dispatches 2 · Wadanohara and the Great Blue Sea
Flash Poison Bugs · The Sun's Curse
Multimedia Ice Scream
* = has yet to be released
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