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The Demon King: Harem cover art

Game · KAWAGUCHI

The Demon King: Harem

SteamEurope and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.
  • Steam Deck Verified

JRPG turn based game. The protagonist awakens in the body of the Demon King in a fantasy world.

Before you buy

Redeem on
Steam clientPC: Windows. Needs a free Steam account.
Activates in
Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom.Activates on accounts registered in the EU, EEA, Switzerland and the United Kingdom.Will not activate on accounts registered in North America, Asia, Latin America or Oceania.
You get
A digital activation keyStandard edition. No disc, no box.
Delivery
To your account and by emailDelivered to your account and by email once it is ready. Some orders get a short manual check first.

Trailers and screenshots

01 / 08 Trailer

The Demon King: Harem

Trailer 1 of 1

About this game

【Story Background】

The protagonist is unexpectedly transported to a fantasy world,

and possesses the body of the Demon King, forced to handle his daily affairs.

One day, the Goblin Queen reports to the Demon King,

that the goblin tribe has been attacked by the human empire.

The player must help the goblin tribe uncover the truth and repel the invading human army.

Thus begins an adventure in this other world.

Rescue the royal family imprisoned by the villains

Build a friendship with the harpies

Help the trapped adventure sisters

Punish the evil, sexy witch

Multiple character storylines

【Romantic Characters】

Succubus Maid

Goblin Queen

Female Officer

Harpy

Harp Chieftain

Human Queen

Swordswoman

Nun

Elf Prophet

Witch

Massage Parlor Apprentice

Massage Parlor Madam

Slave

Tavern Lady

Dragon Queen

【City Reconstruction】

Tavern - Unlocks exclusive storylines

Clothing Shop - Creates exclusive outfits for each character

Item Shop - Sells items to invite characters to your room

Church - Exclusive character storylines

Massage Parlor - Exclusive characters

Tavern - Exclusive characters

Each rebuilt building automatically generates taxes, accumulating with the number of buildings.

Explore this world!

Description, images and details are taken from this product's Steam page.

Details

Developer
KAWAGUCHI
Publisher
KAWAGUCHI
Released
23 Jul, 2026
Genres
RPG
Runs on
Windows
Activates on
Steam client, Europe and UK
Interface
English, Japanese, Simplified Chinese, Traditional Chinese
  • Single-player
  • DualShock Controller Support
  • DualShock Controller Support
  • DualSense Controller Support
  • DualSense Controller Support
  • Partial Controller Support
  • Steam Cloud
  • Family Sharing

System requirements

Windows

The Demon King: Harem system requirements on Windows
ComponentMinimumRecommended
OSWindows 10Windows 11
Processori3i3
Memory2 GB RAM8 GB RAM
GraphicsAnyAny
Storage2 GB available space4 GB available space

Activating it on Steam client

  1. Open the Steam client and sign in.
  2. Choose Games in the top menu, then Activate a Product on Steam.
  3. Paste the key and confirm. It appears in your library.

The key is listed for the Europe and UK. Activates on accounts registered in 32 countries: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Kingdom. region. Read how regions work before you buy.

The Demon King: Harem€4.55