Hentai Academy: Echo Protocol
| App ID | 4917140 |
| App Type | Game |
| Developer | Hentai Academy |
| Publisher | Hentai Academy |
| Last Changenumber | 39386561 |
| Last Record Update | 1 October 2026 – 14:22:28 UTC ( |
| Release Date | 20 November 2026 – 15:29:00 UTC ( |
+4
A dark 18+ visual novel about a war that began fifty years ago — and the people who believe it's over. A ruined city, humanity's last refuge, and a voice beneath the earth that has started speaking again.
There is only partial information available about this app as SteamDB is missing the access token.
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Additional Information
This game is excluded from Steam Family Sharing because: This game has not yet been released
| controller_support | full | |||||||||||||||||||
| ReleaseState | prerelease | |||||||||||||||||||
| Exclude from family sharing (exfgls) | 8 (This game has not yet been released) | |||||||||||||||||||
| Store Release Date | 20 November 2026 – 15:29:00 UTC ( |
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| community_hub_visible | Yes | |||||||||||||||||||
| Primary Genre | Casual (4) | |||||||||||||||||||
| Store Genres | Casual (4), Indie (23) | |||||||||||||||||||
| Store Asset Modification Time | 15 September 2026 – 16:33:29 UTC ( |
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| library_assets |
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| restricted_countries | CN,DE,SA China,  Germany,  Saudi Arabia |
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| Content Descriptors | Some Nudity or Sexual Content (1), Adult Only Sexual Content (3), Frequent Nudity or Sexual Content (4), General Mature Content (5) | |||||||||||||||||||
| controllertagwizard | Yes | |||||||||||||||||||
| AI Content Type | 1 | |||||||||||||||||||
| First seen on SteamDB | 1 July 2026 – 15:25:09 UTC ( |
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| Content Descriptors (Including DLC) | Some Nudity or Sexual Content (1), Adult Only Sexual Content (3), Frequent Nudity or Sexual Content (4), General Mature Content (5) | |||||||||||||||||||
Supported Languages
| 30 Languages | Interface | Full Audio | Subtitles |
|---|---|---|---|
| English | Yes | Yes | |
| French | Yes | Yes | |
| Italian | Yes | Yes | |
| German | Yes | Yes | |
| Spanish - Spain | Yes | Yes | |
| Bulgarian | Yes | Yes | |
| Hungarian | Yes | Yes | |
| Vietnamese | Yes | Yes | |
| Greek | Yes | Yes | |
| Danish | Yes | Yes | |
| Indonesian | Yes | Yes | |
| Spanish - Latin America | Yes | Yes | |
| Traditional Chinese | Yes | Yes | |
| Simplified Chinese | Yes | Yes | |
| Korean | Yes | Yes | |
| Malay | Yes | Yes | |
| Dutch | Yes | Yes | |
| Norwegian | Yes | Yes | |
| Polish | Yes | Yes | |
| Portuguese - Brazil | Yes | Yes | |
| Portuguese - Portugal | Yes | Yes | |
| Romanian | Yes | Yes | |
| Russian | Yes | Yes | |
| Thai | Yes | Yes | |
| Turkish | Yes | Yes | |
| Ukrainian | Yes | Yes | |
| Finnish | Yes | Yes | |
| Czech | Yes | Yes | |
| Swedish | Yes | Yes | |
| Japanese | Yes | Yes |
Assets
Load all asset images 🔞
| trailer_name | trailer |
| trailer_category | 3 |
| microtrailer ↴ | |
| video/webm | 4917140/816242079/6bc47352a341a83fb37acd04fbda9e308ad5c546/1789475871/microtrailer.webm |
| video/mp4 | 4917140/816242079/6bc47352a341a83fb37acd04fbda9e308ad5c546/1789475871/microtrailer.mp4 |
| adaptive_trailers ↴ | |
| dash_av1 | 4917140/816242079/6bc47352a341a83fb37acd04fbda9e308ad5c546/1789475871/dash_av1.mpd |
| dash_h264 | 4917140/816242079/6bc47352a341a83fb37acd04fbda9e308ad5c546/1789475871/dash_h264.mpd |
| hls_h264 | 4917140/816242079/6bc47352a341a83fb37acd04fbda9e308ad5c546/1789475871/hls_264_master.m3u8 |
| screenshot_medium | 257425678/4795b34ec55fbffaf29a7e9e4728f67ff77b0012/movie_600x337.jpg |
| screenshot_full | 257425678/4795b34ec55fbffaf29a7e9e4728f67ff77b0012/movie_full.jpg |
| all_ages | false |
| is_highlight | true |
| timestamp | 15 September 2026 – 12:47:35 UTC |
