Steam
Store data
- UK price
- £2.50
- US price
- $3.39
- Positive reviews
- 100%
- Total reviews
- 10
- Release date
- 24 September 2026
Activity briefingAI summary of recorded signals
Steam player data · App 4810980
异馆十二月
- Single-player
- Family Sharing
Concurrent players1Most recent successful sample
Today's peak354/144 samples
Tracked peak11Highest retained daily peak
Steam rating100%10 reviews
Steam metadata
Game information
Details supplied by the Steam store
- App ID
- 4810980
- App type
- Game
- Developer
- Qiyue Studio ↗
- Publisher
- Qiyue Studio ↗
- Supported systems
- Windows
- Genres
- Adventure, RPG, Simulation, Strategy
- Release date
- 24 September 2026
- Last player update
- 26 Sept · 12:10 UTC
Steam store data
System requirements
Supplied by the developer on Steam
Windows
Minimum
- Requirement
- Requires a 64-bit processor and operating system
- OS
- Windows 10
- Processor
- Intel Core i3 or equivalent
- Memory
- 8 GB RAM
- Graphics
- Integrated graphics
- Storage
- 5 GB available space
- Sound Card
- Any
Recommended
- Requirement
- Requires a 64-bit processor and operating system
- OS
- Windows 10 / Windows 11
- Processor
- Intel Core i5 or equivalent
- Memory
- 8 GB RAM
- Graphics
- Dedicated or modern integrated graphics
- Network
- Broadband Internet connection
- Storage
- 5 GB available space
- Sound Card
- Any
- Additional Notes
- Internet connection required for AI interaction features.
Launch window
Released 24 September 2026 · Tracking from 25 September 2026
SteamWatch’s first observed day and week; tracking can begin after release. Top Sellers is Steam’s revenue ranking, not a sales estimate.
- Player peak
- 11
- Steam reviews
- 0Rating not recorded
- Twitch peak
- Not recorded
- Price observed
- £2.50
- Top Sellers
- No appearanceNo ranked days
1 player-data day recorded in this window.
- Player peak
- 11
- Steam reviews
- 0Rating not recorded
- Twitch peak
- Not recorded
- Price observed
- £2.50
- Top Sellers
- No appearanceNo ranked days
2 player-data days recorded in this window.
Peak 11Average 2Latest 1
24-hour and 7-day views use hourly peaks from ten-minute samples. Longer views use retained daily peaks. Up to 24 recent event markers are shown per layer.
Twitch
Twitch stats
Awaiting the first Twitch sample.
Long-term history
Monthly players breakdown
Calculated from SteamWatch samples
| Month | Peak | Gain | % gain | Average | Avg % gain |
|---|---|---|---|---|---|
| Last 30 days | 11 | — | — | 1 | — |
| September 2026 | 11 | — | — | 1 | — |
Store price Regular price
Daily regional sweep
Regional prices
3 regions checked
| Region | Currency | Regular | Current | Discount | Historical low | Last change |
|---|---|---|---|---|---|---|
| United KingdomGBP · GB | GBP | £2.95 | £2.50 | 15% | £2.50 | No change recorded |
| United StatesUSD · US | USD | US$3.99 | $3.39 | 15% | $3.39 | No change recorded |
| Euro areaEUR · DE | — | — | Unavailable | — | — | No change recorded |
| United Arab EmiratesAED · AE | — | — | Unavailable | — | — | No change recorded |
| AustraliaAUD · AU | — | — | Unavailable | — | — | No change recorded |
| BrazilBRL · BR | — | — | Unavailable | — | — | No change recorded |
| CanadaCAD · CA | — | — | Unavailable | — | — | No change recorded |
| SwitzerlandCHF · CH | — | — | Unavailable | — | — | No change recorded |
| ChileCLP · CL | — | — | Unavailable | — | — | No change recorded |
| ChinaCNY · CN | — | — | Unavailable | — | — | No change recorded |
| ColombiaCOP · CO | — | — | Unavailable | — | — | No change recorded |
| Costa RicaCRC · CR | — | — | Unavailable | — | — | No change recorded |
| Hong KongHKD · HK | — | — | Unavailable | — | — | No change recorded |
| IndonesiaIDR · ID | — | — | Unavailable | — | — | No change recorded |
| IsraelILS · IL | — | — | Unavailable | — | — | No change recorded |
| IndiaINR · IN | — | — | Unavailable | — | — | No change recorded |
| JapanJPY · JP | — | — | Unavailable | — | — | No change recorded |
| South KoreaKRW · KR | — | — | Unavailable | — | — | No change recorded |
| KuwaitKWD · KW | — | — | Unavailable | — | — | No change recorded |
| KazakhstanKZT · KZ | — | — | Unavailable | — | — | No change recorded |
| MexicoMXN · MX | — | — | Unavailable | — | — | No change recorded |
| MalaysiaMYR · MY | — | — | Unavailable | — | — | No change recorded |
| NorwayNOK · NO | — | — | Unavailable | — | — | No change recorded |
| New ZealandNZD · NZ | — | — | Unavailable | — | — | No change recorded |
| PeruPEN · PE | PEN | PEN 13.49 | S/.11.46 | 15% | S/.11.46 | No change recorded |
| PhilippinesPHP · PH | — | — | Unavailable | — | — | No change recorded |
| PolandPLN · PL | — | — | Unavailable | — | — | No change recorded |
| QatarQAR · QA | — | — | Unavailable | — | — | No change recorded |
| RussiaRUB · RU | — | — | Unavailable | — | — | No change recorded |
| Saudi ArabiaSAR · SA | — | — | Unavailable | — | — | No change recorded |
| SingaporeSGD · SG | — | — | Unavailable | — | — | No change recorded |
| ThailandTHB · TH | — | — | Unavailable | — | — | No change recorded |
| TaiwanTWD · TW | — | — | Unavailable | — | — | No change recorded |
| UkraineUAH · UA | — | — | Unavailable | — | — | No change recorded |
| UruguayUYU · UY | — | — | Unavailable | — | — | No change recorded |
| VietnamVND · VN | — | — | Unavailable | — | — | No change recorded |
| South AfricaZAR · ZA | — | — | Unavailable | — | — | No change recorded |
| CIS (regional USD)USD_CIS · AM | — | — | Unavailable | — | — | No change recorded |
| Latin America (regional USD)USD_LATAM · AR | — | — | Unavailable | — | — | No change recorded |
| Middle East & North Africa (regional USD)USD_MENA · EG | — | — | Unavailable | — | — | No change recorded |
| South Asia (regional USD)USD_SASIA · PK | — | — | Unavailable | — | — | No change recorded |
Positive rating100.0%
Positive reviews10
Negative reviews0
Positive reviews Negative reviews
Recent views use Steam's daily review activity. Longer views use weekly totals, retained by SteamWatch.
About this game
Description
Supplied by the Steam store
Yiguan: December is a visual novel combining inn management, character development, mystery, and romance with multiple heroines.
You take over a mysterious entertainment house in a fog-shrouded town. By day, you manage the house and help its residents grow. By night, familiar streets reveal an unsettling side. Recurring dreams, hidden memories, and the ritual awaiting you in December point toward the truth behind a repeating cycle.
【Management and Character Development】
Plan your monthly activities, train characters, arrange rest, manage the teahouse, and upgrade facilities. With limited action points each month, you must balance income, character growth, relationships, and investigation.
【Character Stories and Relationships】
Each heroine has her own personality, secrets, and awakening storyline. Through training, exploration, dialogue choices, and relationship events, you can learn about her past and unlock further story developments and abilities.
【Heartbeat Conversations】
Each month, choose a heroine and select from predefined dialogue options. Different approaches can affect affection, while some conversations offer clues for your investigation and puzzles.
Character replies use prewritten text included in the game. These conversations run locally, without an AI service, free-text chat, or live-generated responses.
【Night Exploration and the Cycle】
Explore the town after dark, uncover hidden clues, and face dangerous encounters. Resources gathered during the day and your characters' abilities help prepare your party for exploration and year-end battles.
Piece together the town's secrets and discover what lies behind the cycle.
【Features】
• A blend of management, character development, and visual novel storytelling • Multiple heroines with individual relationship and awakening storylines • Monthly action-point planning across training, management, and exploration • Mystery, horror, and multiple endings • Fixed dialogue choices that develop relationships and reveal clues • Party battles built around complementary character abilities
December will come. This time, can you lead them out of the cycle?
Steam gallery
Screenshots
12 available
Steam has not listed DLC or a demo for this game yet.
Steam global stats
Achievements
0 achievements
No public achievements found.This game may not use Steam achievements, or its global unlock data may not be public yet.
Saved from Steam
Patches
2 tracked updates
Dev Update: Combat Details and Chibi Battle Style
Hello everyone,Recently, the main development focus of December Mansion has been the combat system.In this round of development, we have continued refining various combat details, including character animations, battle pacing, skill feedback, and the overall visual presentation. After internal discussion, we have also decided that battle characters will mainly be presented in a chibi style.Compared with a more realistic or standard character-display approach, chibi characters are better suited to the current turn-based combat system. They also make character actions, skill effects, and battlefield positioning clearer and easier to read. Going forward, we will continue improving character animations, attack effects, defense actions, and ultimate skill presentations based on this direction.At the same time, we are also working on adjustments to equipment and treasure values. Our goal is...
Read full update on Steam ↗New Character Unlocked: Katarina
We are excited to announce that a new character, Katarina, will be added to Qiyue House!Katarina is a foreign widow with a passionate yet cold-blooded personality. She wields a sniper rifle and excels in charged attacks, making her a high-risk, high-reward damage dealer. In battle, she lurks in the shadows, waiting for the perfect moment to strike, leaving her enemies defenseless.Unlock method: Players can recruit her into Qiyue House after fulfilling specific conditions.The game is still under development, including UI, combat system, and story, but you can already add Qiyue House to your wishlist and follow for updates on new characters and content!As development progresses, we will continue to share character introductions, combat gameplay, and story highlights—stay tuned!
Read full update on Steam ↗
Game activity
Recent changes
Steam events and SteamWatch observations
- SteamWatchPlayer data
New tracked player peak
11 concurrent players — the highest daily peak recorded at that point.
- SteamReview activity
10 new Steam reviews
10 positive · 0 negative.
- SteamRelease
Released on Steam
Release date supplied by the Steam store.
- SteamPatch
Dev Update: Combat Details and Chibi Battle Style ↗
Hello everyone,Recently, the main development focus of December Mansion has been the combat system.In this round of development, we have continued refining various combat details, including character animations, battl…
- SteamPatch
New Character Unlocked: Katarina ↗
We are excited to announce that a new character, Katarina, will be added to Qiyue House!Katarina is a foreign widow with a passionate yet cold-blooded personality. She wields a sniper rifle and excels in charged attac…