One or Eight Inc. (Headquarters: Chiyoda-ku, Tokyo / Representative Director: Issei Komura) announces that its Village Building x Action RPG, "LOL, My Neighbor is the Demon King's Castle 666," officially launched in Early Access on Steam on Thursday, November 12, 2026, at 23:00 (Beijing Time). The game tells the story of the protagonist, saved by a goddess and reincarnated into another world, who rebuilds a village on barren land with companions. However, right next to the village stands a Demon King's Castle...?
To celebrate the Early Access launch, a limited-time sale will be held from now until 22:59 (Beijing Time) on Friday, November 19. The original price is 88 CNY, with a 10% discount during the event, making it only 79.2 CNY.
Additionally, the Early Access trailer was officially released today.
Simply equip a "hat" to switch jobs at will, from Hero to Livestock Keeper! You can also assign hats to villagers to develop your village efficiently!
"LOL, My Neighbor is the Demon King's Castle 666" is an action RPG where you collect materials and recruit companions to gradually grow your village. As villagers settle in, you can delegate production and gathering tasks to them, allowing the village to become self-sufficient.
The player's main task is to develop and expand the village using hats obtained while progressing through the story. There are over 20 job types in the game; simply changing your hat allows you to switch freely between roles such as a combat-focused Warrior or a farming-specialized Farmer. Additionally, hats can be assigned not only to the player but also to villagers. By assigning jobs that suit each villager's traits, you can gather resources and defend the village more efficiently.
However, right next door is the Demon King's Castle!
Unfortunately, this village has a fatal geographical problem—the Demon King's Castle is built right nearby.
Once the idol Demon King, who calls herself "Plachina," holds her Demonic Frenzy Feast (concert), hordes of enthusiastic monsters will flock into the village. To prevent your carefully built village from being trampled due to the concert next door, you must continue to develop the village and personally fight off the invading monsters.
The song "Heartful Full Full Bokko♡," sung by Lady Plachina at her concert, features lyrics, composition, and arrangement by Maron (IOSYS).
About the Early Access Version
The Early Access version includes playability up to Chapter 1, the "Plachina Arc." Players can experience core gameplay mechanics such as village building, crafting, exploration, and combat.
The development team will continue to listen to player opinions and feedback, constantly improving the game content in preparation for the full release.
Full Release Information
The Early Access version is expected to contain about 25% of the full release content. New content will be added sequentially, and updates and optimizations will continue based on player feedback collected during the beta test and demo periods. Additionally, the game's price will be adjusted upon the full release.
・Story content from Chapter 2 to Chapter 5
・More diverse skills, hats, and an expanded game world
・New Demon Kings other than Plachina
Product Information
Game Title: LOL, My Neighbor is the Demon King's Castle 666
Game Genre: Village Building x Action RPG
Supported Platform: PC (Steam)
Release Format: Early Access
※ The full version is scheduled for release in Winter 2027
Early Access Launch Date: Thursday, November 12, 2026, at 23:00 (Beijing Time)
Price: 88 CNY ※ Enjoy a 10% discount until 22:59 (Beijing Time) on Friday, November 19, bringing the price down to 79.2 CNY
Number of Players: 1
Supported Languages: Japanese (Voice/Subtitles) / English / Simplified Chinese / Traditional Chinese
System Requirements: Windows 10 / 11 (64-bit) ※ Please refer to the Steam store page for details
Developer: One or Eight / Team EARTHWARS
Publisher: One or Eight Inc.
Copyright Notice: © oneoreight All Rights Reserved.
About One or Eight Inc.
One or Eight is a company that "loves its fans" and is dedicated to "continuously creating" content that makes fans "go wild."
Company Name: One or Eight Inc.
Company Address: KANDA SQUARE 11F (inside WeWork), 2-2-1 Kanda-Nishikicho, Chiyoda-ku, Tokyo, 101-0054, Japan
Representative Director: Issei Komura

