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Demonion ~Maou no Chika Yousai~ [Final] [Astronauts]
Once upon a time, there was a demon lord who invaded the kingdom of humans and led the world into war. However, the Demon King’s power was taken away by the heroes and sealed deep underground. This is an underground labyrinth where the Demon King is sealed in the deepest part. Due to recent tectonic movements, the seal has been broken, and rumors have spread throughout the kingdom that the Demon King has been resurrected. To subjugate the Demon King and gain fame Skilled adventurers from all over the country visit the underground labyrinth. However, the Demon King uses his magical power to set traps in the labyrinth, summon monsters, and wait for them. The kingdom was thus once again embroiled in war…..
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Thread Updated: 2025-10-09
Release Date: 2012-08-24
Original Title: デモニオン ～魔王の地下要塞～
Translator: SVN VNDB
Censored: Yes (Mosaic)
Version: Final
OS: Windows
Language: English (MTL)
Voice: Japanese
Length: 33h 28m
VNDB: Link
Other Games: Link
Genre:
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Installation:
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1. Extract and run.
Developer Notes:
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■system
【Repel the adventurers who have invaded the underground labyrinth!】
“demonion” is a normal adventure element
This is a game with simulation elements such as “defense” and “invasion”.
The player begins the game as the unsealed and resurrected Demon King.
The main purpose of the game is
Place traps and monsters inside the underground labyrinth to repel adventurers who invade the labyrinth to defeat the Demon King
Capture and train the adventurer heroine and add her to your subordinates
・Invade the kingdom of humans and attack the castle of the queen who orders the subjugation of the demon king
There are three.
●AVG part
The story mainly progresses in this AVG part.
Conversational and naughty events with the heroines occur as the game progresses.
●Defense part
By placing traps and monsters inside the underground labyrinth
They repel adventurers who invade the labyrinth with the aim of subjugating the Demon King, and accumulate magical power.
The Demon King was sealed in an underground labyrinth, so at the start of the game he only had a small amount of magical power
You can only place weak traps and monsters, but by repelling adventurers and gaining magical power
You will be able to place more powerful traps and monsters.
In the defense part, the adventurers travel to the deepest part of the labyrinth 『the throne room』 with the aim of subjugating the Demon King.
If an adventurer invades the 『throne room』, the demon lord himself will be damaged
If the Demon King’s HP reaches 0, the game is over.
A successful defense is achieved if all attacking enemies are successfully repulsed.
●Strategy part
Form a unit of monsters or heroine units under your command and invade the base of the Stomgart Kingdom.
Defense units from enemy units are waiting at each base.
If you wipe out the defense forces, you can successfully invade and take control of their strongholds.
There is Queen Darian, who has conquered bases one after another and finally orders the subjugation of the Demon King
If you attack Stomgard Castle, the game will be cleared.
Also, training the heroine captured during the defense part
You can also choose to have sex with the heroine you have subordinated in this part.
■Characters appearing
●Astaroth
The king of demons who was defeated once about 200 years ago and sealed deep underground.
It ruled over almost the entire continent, but was defeated and sealed away by human and demi-racial heroes.
Thanks to the efforts of her close maids, she is revived and once again embarks on conquering the continent.
However, most of the magical power it once possessed has been lost.
●Leiris＝ Transat (CV: Hanan)
She is the only officially recognized 『Saint』 and Holy Knight from the church headquarters in the kingdom’s capital.
He is absolutely loyal to the church and the royal family, not to mention demons and monsters
Even elves and demi-races, if they become enemies, will cut them down without hesitation.
●Julian＝ Balcraft (CV: Usagi Kusuda)
A female warrior who wanders around the continent as an adventurer.
He comes from a shantytown where poverty and discrimination swirl.
He used to form parties, but after experiencing repeated divisions, he grew tired of them and started preferring to be alone.
Hearing the Queen’s message of subjugating the Demon King, he challenges the underground labyrinth alone.
●Neige＝ Owl Eyes (CV: Ryo Kasumi)
『Researcher and advisor of the Magician Guild』.
Spend everything discovering new magical knowledge.
She has a strong sexual desire, and although she always uses her familiar to process her sexual desire, she is still a virgin.
Although he is one of the most powerful magicians in the kingdom, he rarely appears publicly.
●Olivia＝ Elroy (CV: Miyabi Shion)
The chief priest who runs the monastery at the church headquarters.
She is in a position to unite all the nuns in the kingdom, and is someone she admires.
Although I understand that the Queen’s order to subjugate the Demon King is the right thing to do, I am saddened by the spread of war.
Although they do not directly go on subjugation missions, they organize relief groups made up of nuns and provide logistical support.
●Irwin＝ Silver Moon (CV: Momoka Sakura)
A girl from a family that protects a large elf forest.
Although he has never been outside the forest since he was born, he leaves the forest to subjugate the demon lord who threatens the peace of the forest.
He is pure and innocent and doesn’t doubt people.
Fight with the help of nature spirits.
●Oboro (CV: Konami Onami)
Kunoichi was raised as an assassin from an early age and is now the most skilled in the kingdom.
His arm was bought by the Queen and taken up by one of her inner circle
『They are called dogs 』dogs and are not allowed to approach their sides.
He is expressionless, as if he has left his emotions behind, and does not say more words than necessary.
●Himika＝ Sumeragi (CV: Ann Kasuga)
A princess of an exorcist family dispatched from an eastern nation that borders the Kingdom of Stomgard.
He has mastered the art of exorcism using spells and natural veins, which is not found in the West.
He entered the country on the pretext of cooperating in the subjugation of the Demon King
In fact, she also has a hidden purpose: to search for her sister named 『Yuki』, who was kidnapped in the past.
●Maia＝ Frest (CV: Shiho Nakaya)
A self-proclaimed brave girl from a cold village located on the northern frontier of the kingdom.
Perhaps because he grew up in the mountains from an early age, he has strong legs and is surprisingly quick at handling his body
Swordsmanship is weak because it is my own style.
A good country girl who is fundamentally good-natured, doesn’t doubt people, and is easily deceived.
●Vanessa＝ Cromwell (CV: Kaoru Momozo)
The captain of the Royal Guards who protects the Queen and has the full trust of Queen Darian.
『Golden God of War』, he is the kingdom’s strongest spear user, and his name is known throughout the continent.
She abandons herself as a woman and devotes her entire life to improving her spearmanship.
●Darian＝ Stomgard (CV: Kanami Kono)
One of the descendants of the hero who once fought against the demon army and sealed the Demon King underground.
A tyrant who imposes tyranny on frontier tribes and suppresses their opposition by force.
Although he is domineering, he is not foolish, and is rather adept at deflecting public dissatisfaction.
●Gigliola (CV: Kana No)
Even before the Demon King was sealed away, he served as his close aide and helped him revive.
Although his abilities as a devil are not very high, he is always a calm, collected, and intelligent tactician
He knows every corner of the underground labyrinth.
●Miska (CV: 337)
In contrast to Gigliola, she has a bright and talkative older sister personality.
Although he treats demons with a gentle attitude, the hatred he harbors is not inferior to that of Gigliola
If the captured heroines are not restrained by the Demon King, they will happily try to question them○.
You need Japanese locale or an emulator to play the game.
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Win: BUZZHEAVIER – DATANODES – MIXDROP – PIXELDRAIN – VIKINGFILE
