# Killjoy Hunter Yuuko

Summer DB entity ID: 6359719e\-e576\-4f5e\-a123\-b3993e0216f3

Steam App ID: 1148470

Following the events of "ef \- the latter tale," Yuuko returns to Otowa in her old friends' dreams to take out the monsters known as "KILLJOYs" which force nightmares upon happy couples\.    Description & Features  \- A platforming adventure with five exciting levels\.    \- Boss fights featuring the cast of "ef \- the first tale" and "ef \- the last tale"   \- Experience a new mini\-after story from the iconic series\!

## Game information

- Type: game

- Developer: minori

- Publisher: MangaGamer

- Release date: Oct 17, 2019

- Coming soon: false

- Free to play: false

- Parent Steam app: Not collected

- Genres: Action

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

- Platforms: windows

- Website: Not collected

- Screenshots: https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_c0e5c8f71d81e82a9645a51bb6ebece6bd66915d\.1920x1080\.jpg?t=1728632190, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_1d6091519c73ec97347fd9914d84a38816e86ca5\.1920x1080\.jpg?t=1728632190, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_0a9f2aed2b53ddf9cec6615b8a2464cda2ff04d5\.1920x1080\.jpg?t=1728632190, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_e09d9f4c81f1262850207e389ea32c9da8bb8b7f\.1920x1080\.jpg?t=1728632190, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_470ceb75c6b86c7f3890958d4e5131ba5f26493c\.1920x1080\.jpg?t=1728632190, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_4c76e78cbe205cc822f96da5d1b0b683cd6ba82d\.1920x1080\.jpg?t=1728632190, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_3524b6f73b4714da2796ff18b3fa82ca71ce5b9f\.1920x1080\.jpg?t=1728632190, https://shared\.akamai\.steamstatic\.com/store\_item\_assets/steam/apps/1148470/ss\_6aabc5bf2b5f5d9977b79c06e4211a89785b18aa\.1920x1080\.jpg?t=1728632190

- Price: 299 minor units USD; discount 0%

- Price country: US

## Observed metrics

- Current players: 0

- Steam review count: 47

- Steam positive reviews: 46

- Steam negative reviews: 1

- Steam positive percentage: 97.87234042553192%

- 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/6359719e-e576-4f5e-a123-b3993e0216f3/player-metrics?days=7&format=markdown) · [JSON](/api/v1/entities/6359719e-e576-4f5e-a123-b3993e0216f3/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\-28T16:58:32\.455488\+00:00

- Details observed: 2026\-09\-24T11:36:25\.797744\+00:00

- Player count observed: 2026\-09\-24T11:36:27\.186278\+00:00

- Reviews observed: 2026\-09\-24T11:36:26\.830514\+00:00

Full provenance: \{"urls":\{"price":"https://store\.steampowered\.com/app/1148470/","catalog":"https://api\.steampowered\.com/IStoreService/GetAppList/v1/","details":"https://store\.steampowered\.com/app/1148470/","players":"https://api\.steampowered\.com/ISteamUserStats/GetNumberOfCurrentPlayers/v1/?appid=1148470","reviews":"https://store\.steampowered\.com/appreviews/1148470"\},"price":"2026\-09\-24T11:36:25\.797744\+00:00","source":"steam","catalog":"2026\-09\-28T16:58:32\.455488\+00:00","country":"US","details":"2026\-09\-24T11:36:25\.797744\+00:00","players":"2026\-09\-24T11:36:27\.186278\+00:00","reviews":"2026\-09\-24T11:36:26\.830514\+00:00","language":"en","editorial":null,"membership":"store\_catalog","observations":\{"price":"c9a89b4f\-4be1\-454b\-b070\-7bf47b1a7dfe","catalog":"ba21663e\-a640\-4760\-8ad4\-7a631a454eff","details":"d8652218\-9a1e\-477f\-be01\-ae8f6a8de598","players":"ea5bbe02\-5249\-4dde\-b68f\-c22d1207a121","reviews":"b12c0416\-1a8d\-4863\-b7c0\-de6ad8455527"\},"reviewFilters":\{"language":"all","review\_type":"all","purchase\_type":"all","filter\_offtopic\_activity":0\}\}

Native rating methodology: \{"count":0,"average":null,"entityId":"6359719e\-e576\-4f5e\-a123\-b3993e0216f3","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/1148470/) · [JSON](/api/v1/games/6359719e-e576-4f5e-a123-b3993e0216f3)