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Senpai and the Mysterious Island

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App ID 3070600
App Type Game
Developer
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 ()
❓ 62.90%
27 reviews
1
In-Game
🗺️ Adventure 🎲 RPG 🍑 Nudity 🔞 Sexual Content 🌸 Anime

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.

Steam price history

Special Promotion, ends 3 November 2025
Current Price -60% $4.79
Lowest Recorded Price $4.79 at -60% 20 October 2025
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar -60% $4.79 $4.79 $4.79 $4.79 at -60%
Russian Ruble -60% 184 ₽ $2.32 -51.53% $2.32 184 ₽ at -60%
South Asia - USD -60% $2.47 $2.47 -48.43% $2.47 $2.47 at -60%
Ukrainian Hryvnia -60% 106₴ $2.51 -47.44% $2.51 106₴ at -60%
Kazakhstani Tenge -60% 1360₸ $2.52 -47.21% $2.52 1360₸ at -60%
Indonesian Rupiah -60% Rp 42799 $2.58 -46.11% $2.58 Rp 42799 at -60%
Vietnamese Dong -60% 68000₫ $2.58 -46.08% $2.58 68000₫ at -60%
Indian Rupee -60% ₹ 228 $2.58 -46.04% $2.58 ₹ 228 at -60%
LATAM - U.S. Dollar -60% $2.63 $2.63 -45.09% $2.63 $2.63 at -60%
MENA - U.S. Dollar -60% $2.63 $2.63 -45.09% $2.63 $2.63 at -60%
Philippine Peso -60% ₱158.00 $2.67 -44.15% $2.67 ₱158.00 at -60%
Chinese Yuan -60% ¥ 19.20 $2.70 -43.54% $2.70 ¥ 19.20 at -60%
South African Rand -60% R 47.20 $2.75 -42.52% $2.75 R 47.20 at -60%
CIS - U.S. Dollar -60% $2.79 $2.79 -41.75% $2.79 $2.79 at -60%
Saudi Riyal -60% 10.70 SR $2.85 -40.43% $2.85 10.70 SR at -60%
Brazilian Real -60% R$ 15,39 $2.87 -40.05% $2.87 R$ 15,39 at -60%
Chilean Peso -60% CLP$ 2720 $2.88 -39.76% $2.88 CLP$ 2720 at -60%
Kuwaiti Dinar -60% 0.90 KD $2.93 -38.74% $2.93 0.90 KD at -60%
Taiwan Dollar -60% NT$ 90 $2.94 -38.53% $2.94 NT$ 90 at -60%
Malaysian Ringgit -60% RM12.80 $3.04 -36.51% $3.04 RM12.80 at -60%
Mexican Peso -60% Mex$ 58.39 $3.16 -33.82% $3.16 Mex$ 58.39 at -60%
Colombian Peso -60% COL$ 12200 $3.17 -33.74% $3.17 COL$ 12200 at -60%
Qatari Riyal -60% 11.59 QR $3.18 -33.55% $3.18 11.59 QR at -60%
Thai Baht -60% ฿103.60 $3.20 -33.13% $3.20 ฿103.60 at -60%
Peruvian Sol -60% S/.11.00 $3.24 -32.20% $3.24 S/.11.00 at -60%
Uruguayan Peso -60% $U147 $3.68 -23.00% $3.68 $U147 at -60%
U.A.E. Dirham -60% 13.60 AED $3.70 -22.70% $3.70 13.60 AED at -60%
Singapore Dollar -60% S$4.80 $3.71 -22.54% $3.71 S$4.80 at -60%
South Korean Won -60% ₩ 5400 $3.77 -21.26% $3.77 ₩ 5400 at -60%
Hong Kong Dollar -60% HK$ 31.20 $4.01 -16.16% $4.01 HK$ 31.20 at -60%
New Zealand Dollar -60% NZ$ 6.99 $4.04 -15.56% $4.04 NZ$ 6.99 at -60%
Costa Rican Colon -60% ₡2080 $4.14 -13.44% $4.14 ₡2080 at -60%
Canadian Dollar -60% CDN$ 6.19 $4.43 -7.32% $4.43 CDN$ 6.19 at -60%
Japanese Yen -60% ¥ 704 $4.62 -3.42% $4.62 ¥ 704 at -60%
Australian Dollar -60% A$ 7.10 $4.67 -2.34% $4.67 A$ 7.10 at -60%
British Pound -60% £3.99 $5.29 +10.60% $5.29 £3.99 at -60%
Norwegian Krone -60% 53,60 kr $5.37 +12.23% $5.37 53,60 kr at -60%
Israeli New Shekel -60% ₪17.58 $5.39 +12.68% $5.39 ₪17.58 at -60%
Euro -60% 4,71€ $5.49 +14.69% $5.49 4,71€ at -60%
Polish Zloty -60% 21,99zł $6.06 +26.53% $6.06 21,99zł at -60%
Swiss Franc -60% CHF 5.31 $6.69 +39.75% $6.69 CHF 5.31 at -60%
Valve suggested prices are shown on package pages.

Price history

Initializing price history graph…

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View lowest recorded prices on Steam store pages by using our browser extension.

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 ()
osarch empty string
community_hub_visible Yes
Social Media https://discord.com/invite/EaqZEsP3pV
https://x.com/SaikeyStudios
https://www.youtube.com/@saikeystudios/
Primary Genre Adventure (25)
Store Genres Adventure (25), Casual (4), RPG (3)
Steam Release Date 7 December 2024 – 00:35:02 UTC ()
Store Asset Modification Time 15 August 2025 – 16:47:40 UTC () (1755276460)
library_assets
library_capsulezh-cn,ja,en
library_heroen
library_logozh-cn,ja,en
library_headeren,zh-cn,ja
logo_position ↴
pinned_positionBottomCenter
width_pct47.1659674676572
height_pct74.7392741233278
osextended empty string
name_localized
japanese先輩と不思議な島
schinese前辈与不可思议之岛
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 (), in changelist #24076953
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

Assets

Load all asset images
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small_capsule
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schinesecapsule_231x87_schinese.jpg
japanesecapsule_231x87_japanese.jpg
header_image
englishheader.jpg
schineseheader_schinese.jpg
japaneseheader_japanese.jpg
library_assets_full
library_capsule ↴
image/schineselibrary_600x900_schinese.jpg
image/japaneselibrary_600x900_japanese.jpg
image/englishlibrary_600x900.jpg
image2x/schineselibrary_600x900_schinese_2x.jpg
image2x/japaneselibrary_600x900_japanese_2x.jpg
image2x/englishlibrary_600x900_2x.jpg
library_hero ↴
image/englishlibrary_hero.jpg
image2x/englishlibrary_hero_2x.jpg
library_logo ↴
image/schineselogo_schinese.png
image/japaneselogo_japanese.png
image/englishlogo.png
image2x/schineselogo_schinese_2x.png
image2x/japaneselogo_japanese_2x.png
image2x/englishlogo_2x.png
logo_position/pinned_positionBottomCenter
logo_position/width_pct47.1659674676572
logo_position/height_pct74.7392741233278
library_header ↴
image/englishlibrary_header.jpg
image/schineselibrary_header_schinese.jpg
image/japaneselibrary_header_japanese.jpg
Assets
main_capsulef740b0b28926ea2e2935f42f41902ba0ed997610/capsule_616x353.jpg
small_capsule6829584070e496e12e7f162ebbb568c28a659fd1/capsule_231x87.jpg
headerheader.jpg
page_backgroundpage_bg_generated_v6b.jpg
hero_capsulehero_capsule.jpg
library_capsulelibrary_600x900.jpg
library_capsule_2xlibrary_600x900_2x.jpg
library_herolibrary_hero.jpg
library_hero_2xlibrary_hero_2x.jpg
community_icon5b19a8d86e3183db3cfd3d6afde543d5f44d8fd6.jpg
page_background_pathapp/3070600
raw_page_backgroundpage_bg_raw.jpg
timestamp15 August 2025 – 16:47:47 UTC

Trailer 752804 ↴

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
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