Senpai and the Mysterious Island
| App ID | 3070600 |
| App Type | Game |
| Developer | Ruhut Soft |
| Publisher | Saikey Studios |
| Franchise | Saikey Studios |
| Supported Systems | Windows |
| Technologies | RPGMaker Engine |
| Last Changenumber | 31338797 |
| Last Record Update | 26 September 2025 – 23:25:29 UTC ( |
| Release Date | 7 December 2024 – 00:35:02 UTC ( |
An RPG where you get to uncover the secrets of a mysterious island inhabited by succubi that was rumored to contain a lost ancient technology. Play as either the warrior Hula Elstia, or Sonia Lanternlily to a variety of combat styles, and dress them up with various outfits.
Additional Information
| Developer | Ruhut Soft | |||||||||||||||||
| controller_support | partial | |||||||||||||||||
| community_visible_stats | Yes | |||||||||||||||||
| ReleaseState | released | |||||||||||||||||
| Publisher | Saikey Studios | |||||||||||||||||
| Store Release Date | 7 December 2024 – 00:35:06 UTC ( |
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| osarch | empty string | |||||||||||||||||
| community_hub_visible | Yes | |||||||||||||||||
| Social Media | https://discord.com/invite/EaqZEsP3pV https://x.com/SaikeyStudios https://www.youtube.com/@saikeystudios/ |
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| Primary Genre | Adventure (25) | |||||||||||||||||
| Store Genres | Adventure (25), Casual (4), RPG (3) | |||||||||||||||||
| Steam Release Date | 7 December 2024 – 00:35:02 UTC ( |
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| Store Asset Modification Time | 15 August 2025 – 16:47:40 UTC ( |
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| library_assets |
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| osextended | empty string | |||||||||||||||||
| name_localized |
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| review_score | 6 | |||||||||||||||||
| review_percentage | 70 | |||||||||||||||||
| Detected Technologies (?) | RPGMaker Engine, Greenworks SDK, NWJS SDK, NodeJS SDK | |||||||||||||||||
| Content Descriptors | General Mature Content (5) | |||||||||||||||||
| controllertagwizard | Yes | |||||||||||||||||
| First seen on SteamDB | 22 June 2024 – 10:10:33 UTC ( |
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| Content Descriptors (Including DLC) | General Mature Content (5) | |||||||||||||||||
Supported Languages
| 4 Languages | Interface | Full Audio | Subtitles |
|---|---|---|---|
| English | Yes | Yes | |
| Japanese | Yes | Yes | Yes |
| Simplified Chinese | Yes | Yes | |
| Traditional Chinese | Yes | Yes |
Tags
Categories
Hardware Categories
Partial Controller Support
DualShock Controllers (USB Only)
DualShock Controllers
DualSense Controllers (USB Only)
Assets
Load all asset images
| trailer_name | Main Trailer |
| trailer_category | 0 |
| trailer_480p ↴ | |
| video/webm | 257053416/movie480_vp9.webm |
| video/mp4 | 257053416/movie480.mp4 |
| trailer_max ↴ | |
| video/webm | 257053416/movie_max_vp9.webm |
| video/mp4 | 257053416/movie_max.mp4 |
| microtrailer ↴ | |
| video/webm | 3070600/752804/d48f8fda721e742c607ca5c07c7e0d771f293826/1750823389/microtrailer.webm |
| video/mp4 | 3070600/752804/d48f8fda721e742c607ca5c07c7e0d771f293826/1750823389/microtrailer.mp4 |
| adaptive_trailers ↴ | |
| dash_av1 | 3070600/752804/d48f8fda721e742c607ca5c07c7e0d771f293826/1750823389/dash_av1.mpd |
| dash_h264 | 3070600/752804/d48f8fda721e742c607ca5c07c7e0d771f293826/1750823389/dash_h264.mpd |
| hls_h264 | 3070600/752804/d48f8fda721e742c607ca5c07c7e0d771f293826/1750823389/hls_264_master.m3u8 |
| screenshot_medium | 257053416/movie.293x165.jpg |
| screenshot_full | 257053416/movie_full.jpg |
| all_ages | true |
| is_highlight | true |
| timestamp | 18 September 2024 – 08:36:04 UTC |
Depots
| ID | Configuration | Size | DL. |
|---|---|---|---|
| 3070601 | Windows English | 574.53 MiB | 450.18 MiB |
| 3070602 | Windows Japanese | 540.04 MiB | 418.60 MiB |
| 3070603 | Windows Simplified Chinese | 586.55 MiB | 457.69 MiB |
| 3070604 | Windows Traditional Chinese | 586.53 MiB | 457.69 MiB |
Total size on disk is 2.23 GiB and total download size is 1.74 GiB.
Total size on disk is 574.53 MiB and total download size is 450.18 MiB, when filtered to Windows, English, no DLC depots.
Branches
| Name | Description | Build ID | Time Updated |
|---|---|---|---|
| public | 16585803 |