# Dark Rose Valkyrie: New Mission Addition Set

Summer DB entity ID: 447c0615\-ac1f\-490e\-832d\-a068f2d60db5

Steam App ID: 813625

Unlock new missions with the New Mission Addition Set\.  ・Sakimi Research Facility B3 Area will be opened within Sakimi Research Facility\. ※You will be able to advance if you have defeated the boss enemy in Sakimi Research Facility B2\.  ・Ryoumori Research Facility B3 Area will be opened within Ryoumori Research Facility\. ※You will be able to accept the additional missions after completing a certain mission\.  ・Tsukushidai Research Facility B4 Area will be opened within Tsukushidai Research Facility\. ※You will be able to accept the additional missions after completing a certain mission\.  ・Tsukinosaki Research Facility B4 Area will be opened within Tsukinosaki Research Facility\. ※You will be able to accept the additional missions after completing a certain mission\.  New missions will be added to the \[Command Room\]\.  ※Uninstalling DLC items may prevent users from loading save files made before the DLC item was uninstalled\. To ensure that users can load all Dark Rose Valkyrie save files, we recommend that users do NOT uninstall DLC items\.

## Game information

- Type: dlc

- Developer: Idea Factory, Compile Heart

- Publisher: Not collected

- Release date: Apr 10, 2018

- Coming soon: false

- Free to play: true

- Parent Steam app: 726950

- Genres: RPG

- Categories: Single\-player, Downloadable Content, Steam Achievements, Full controller support, Steam Cloud, Family Sharing

- Platforms: windows

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/813625/ss\_b9592ff35f177b8440cf1c821a7640459e4a6b75\.1920x1080\.jpg?t=1565918101, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/813625/ss\_62f1d4692cf38e9c214f0b4f1647f457a06c36e4\.1920x1080\.jpg?t=1565918101, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/813625/ss\_3e15dec8ea68cd219a8be23a97f39256e14408ff\.1920x1080\.jpg?t=1565918101, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/813625/ss\_0bf4e9caa58d6aa1a47b80a71ea3bfff20114376\.1920x1080\.jpg?t=1565918101, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/813625/ss\_b4be5b52b08b8f8978cc94f8fb63276bf628b1d5\.1920x1080\.jpg?t=1565918101, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/813625/ss\_d08b010e16055cf8253b647191fac7c702d05fd1\.1920x1080\.jpg?t=1565918101

- Price: Not collected

- Price country: Not collected

## Observed metrics

- Current players: Not collected

- Steam review count: 3

- Steam positive reviews: 3

- Steam negative reviews: 0

- Steam positive percentage: 100%

- Summer DB rating: No native votes

Review filters: \{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}

## Player history

[Seven-day chart data as Markdown](/api/v1/entities/447c0615-ac1f-490e-832d-a068f2d60db5/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/447c0615-ac1f-490e-832d-a068f2d60db5/player-metrics?days=7)

Chart values are hourly observed maxima. The sampled 24-hour peak and missing intervals carry explicit coverage; history before collection is unknown.

## Sources and freshness

- Catalog membership: store\_catalog

- Catalog observed: 2026\-09\-24T19:57:04\.362365\+00:00

- Details observed: 2026\-09\-23T10:28:18\.414051\+00:00

- Player count observed: Not collected

- Reviews observed: 2026\-09\-23T10:28:19\.463205\+00:00

Full provenance: \{"urls":\{"price":null,"catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/813625/","players":null,"reviews":"https://store\.steampowered\.com/appreviews/813625"\},"price":null,"source":"steam","catalog":"2026\-09\-24T19:57:04\.362365\+00:00","country":"US","details":"2026\-09\-23T10:28:18\.414051\+00:00","players":null,"reviews":"2026\-09\-23T10:28:19\.463205\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":null,"catalog":"13a7d8e1\-e91a\-485d\-aac9\-79e71e6f8a99","details":"07a08524\-4b72\-46f1\-86e4\-65c67cdaaace","players":null,"reviews":"4248f7d3\-79e2\-4dbf\-8435\-320a43be007f"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"447c0615\-ac1f\-490e\-832d\-a068f2d60db5","revision":0,"observedAt":null,"methodology":"arithmetic\-v1","distribution":\[0,0,0,0,0,0,0,0,0,0\]\}

Steam reviews are not Summer DB votes. Missing data is not zero. Player counts are observations, not historical peaks. A supplemental record does not establish that a game was delisted.

[Steam store](https://store.steampowered.com/app/813625/) · [JSON](/api/v1/games/447c0615-ac1f-490e-832d-a068f2d60db5)