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Senpai and the Mysterious Island

Wishlist Follow Ignore Launch Unwatch Watch
App ID 3070600
App Type Game
Developer
Publisher Saikey Studios
Franchise Saikey Studios
Supported Systems Windows
Technologies RPGMaker Engine
Last Changenumber 39323160
Last Record Update 29 September 2026 – 22:53:55 UTC ()
Release Date 7 December 2024 – 00:35:02 UTC ()
❓ 60.74%
30 reviews
0
In-Game
🗺️ Adventure 🎲 RPG 🔞 Sexual Content 🍑 Nudity 🌸 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 8 October 2026
Current Price -70% $3.59
Lowest Recorded Price -70% $3.59 10 February 2026
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar -70% $3.59 $3.59 $3.59 -70% $3.59
Russian Ruble -70% 138 ₽ $1.65 -53.89% $1.65 -70% 138 ₽
Ukrainian Hryvnia -70% 79₴ $1.75 -51.03% $1.75 -70% 79₴
Indian Rupee -70% ₹ 171 $1.77 -50.52% $1.77 -70% ₹ 171
Indonesian Rupiah -70% Rp 32099 $1.79 -50.00% $1.79 -70% Rp 32099
SASIA - U.S. Dollar -70% $1.85 $1.85 -48.47% $1.85 -70% $1.85
Philippine Peso -70% ₱118.50 $1.89 -47.30% $1.89 -70% ₱118.50
Vietnamese Dong -70% 51000₫ $1.96 -45.35% $1.96 -70% 51000₫
LATAM - U.S. Dollar -70% $1.97 $1.97 -45.13% $1.97 -70% $1.97
MENA - U.S. Dollar -70% $1.97 $1.97 -45.13% $1.97 -70% $1.97
Chilean Peso -70% CLP$ 2040 $2.07 -42.11% $2.07 -70% CLP$ 2040
CIS - U.S. Dollar -70% $2.09 $2.09 -41.78% $2.09 -70% $2.09
Taiwan Dollar -70% NT$ 67 $2.09 -41.52% $2.09 -70% NT$ 67
South African Rand -70% R 35.40 $2.12 -40.90% $2.12 -70% R 35.40
Saudi Riyal -70% 8.02 SR $2.13 -40.65% $2.13 -70% 8.02 SR
Chinese Yuan -70% ¥ 14.40 $2.14 -40.17% $2.14 -70% ¥ 14.40
Kuwaiti Dinar -70% 0.67 KD $2.16 -39.57% $2.16 -70% 0.67 KD
Brazilian Real -70% R$ 11,54 $2.20 -38.50% $2.20 -70% R$ 11,54
Kazakhstani Tenge -70% 1020₸ $2.30 -35.93% $2.30 -70% 1020₸
Thai Baht -70% ฿77.70 $2.31 -35.58% $2.31 -70% ฿77.70
Malaysian Ringgit -70% RM9.60 $2.35 -34.52% $2.35 -70% RM9.60
Peruvian Sol -70% S/.8.25 $2.37 -33.75% $2.37 -70% S/.8.25
Qatari Riyal -70% 8.69 QR $2.38 -33.59% $2.38 -70% 8.69 QR
Mexican Peso -70% Mex$ 43.79 $2.39 -33.25% $2.39 -70% Mex$ 43.79
Uruguayan Peso -70% $U110 $2.72 -23.98% $2.72 -70% $U110
Colombian Peso -70% COL$ 9150 $2.75 -23.35% $2.75 -70% COL$ 9150
U.A.E. Dirham -70% 10.20 AED $2.77 -22.64% $2.77 -70% 10.20 AED
Singapore Dollar -70% S$3.60 $2.81 -21.62% $2.81 -70% S$3.60
New Zealand Dollar -70% NZ$ 5.24 $2.94 -18.10% $2.94 -70% NZ$ 5.24
Hong Kong Dollar -70% HK$ 23.40 $2.98 -16.93% $2.98 -70% HK$ 23.40
South Korean Won -70% ₩ 4050 $2.99 -16.56% $2.99 -70% ₩ 4050
Canadian Dollar -70% CDN$ 4.64 $3.26 -9.10% $3.26 -70% CDN$ 4.64
Japanese Yen -70% ¥ 528 $3.34 -6.81% $3.34 -70% ¥ 528
Costa Rican Colon -70% ₡1560 $3.41 -4.96% $3.41 -70% ₡1560
Australian Dollar -70% A$ 5.32 $3.68 +2.74% $3.68 -70% A$ 5.32
British Pound -70% £2.99 $3.94 +10.00% $3.94 -70% £2.99
Euro -70% 3,53€ $3.97 +10.59% $3.97 -70% 3,53€
Norwegian Krone -70% 40,20 kr $4.17 +16.37% $4.17 -70% 40,20 kr
Polish Zloty -70% 16,49zł $4.23 +18.08% $4.23 -70% 16,49zł
Israeli New Shekel -70% ₪13.18 $4.29 +19.52% $4.29 -70% ₪13.18
Swiss Franc -70% CHF 3.98 $4.79 +33.63% $4.79 -70% CHF 3.98
Valve suggested prices are shown on package pages.

Price history

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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 4
review_percentage 37
Detected Technologies RPGMaker Engine, Greenworks SDK, NWJS SDK, NodeJS SDK
Content Descriptors General Mature Content (5)
controllertagwizard Yes
disable_user_media_upload empty string
First seen on SteamDB 22 June 2024 – 10:10:33 UTC (), in changelist #24076953
Content Descriptors (Including DLC) General Mature Content (5)
disable_user_facing_ugc 1

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
clienticon 977f94eb0d65dea1f3dcc1d3108f57121b631513
clienttga 6bce711d41a6cd72c47a2c55ae7321794db09f44
icon 5b19a8d86e3183db3cfd3d6afde543d5f44d8fd6
small_capsule
english6829584070e496e12e7f162ebbb568c28a659fd1/capsule_231x87.jpg
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
small_capsule_2x3811589ff553a90355bb25c8fe1c5e050fe23698/capsule_231x87_2x.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
last_modified15 August 2025 – 16:47:47 UTC
timestamp15 August 2025 – 16:47:47 UTC

Trailer 752804 ↴

trailer_name Main Trailer
trailer_category 0
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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