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マーダーミステリーパラドクス このひと夏の十五年

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App ID 2203040
App Type Game
Developer
Publisher Aniplex Inc.
Supported Systems Windows
Last Changenumber 30215589
Last Record Update 23 July 2025 – 22:12:00 UTC ()
Release Date 1 December 2023 – 14:50:49 UTC ()
❓ 78.58%
204 reviews
5
In-Game
🗺️ Adventure 📚 Visual Novel 🧚 Choose Your Own Adventure 🏽 2D 🌸 Anime

"Murder Mystery Paradox: Fifteen Years of Summer" is a text-based adventure game. Enter the remote and sparsely populated island of Shikinejima and attempt to solve the strangely recurring mystery found there.

Steam price history

Current Price $19.99
Lowest Recorded Price $9.99 at -50% 26 June 2025
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar $19.99 $19.99 $9.99 $9.99 at -50%
South Asia - USD $8.19 $8.19 -59.03% $4.09 $4.09 at -50%
Russian Ruble 710 ₽ $8.85 -55.72% $4.42 355 ₽ at -50%
Kazakhstani Tenge 5200₸ $9.67 -51.59% $4.83 2600₸ at -50%
Vietnamese Dong 260000₫ $9.91 -50.42% $4.95 130000₫ at -50%
Ukrainian Hryvnia 415₴ $9.97 -50.10% $4.97 207₴ at -50%
Indian Rupee ₹ 880 $10.03 -49.81% $5.01 ₹ 440 at -50%
Indonesian Rupiah Rp 165999 $10.15 -49.19% $5.07 Rp 82999 at -50%
South African Rand R 185.00 $10.41 -47.89% $5.20 R 92.50 at -50%
CIS - U.S. Dollar $10.49 $10.49 -47.52% $5.24 $5.24 at -50%
LATAM - U.S. Dollar $10.49 $10.49 -47.52% $5.24 $5.24 at -50%
MENA - U.S. Dollar $10.49 $10.49 -47.52% $5.24 $5.24 at -50%
Chinese Yuan ¥ 76 $10.58 -47.07% $5.29 ¥ 38 at -50%
Philippine Peso ₱615.00 $10.73 -46.28% $5.36 ₱307.50 at -50%
Chilean Peso CLP$ 10500 $10.75 -46.18% $5.37 CLP$ 5250 at -50%
Saudi Riyal 40.95 SR $10.91 -45.40% $5.45 20.47 SR at -50%
Brazilian Real R$ 59,99 $10.94 -45.22% $5.47 R$ 29,99 at -50%
Taiwan Dollar NT$ 328 $10.96 -45.16% $5.48 NT$ 164 at -50%
Kuwaiti Dinar 3.35 KD $10.96 -45.15% $5.46 1.67 KD at -50%
Malaysian Ringgit RM49.00 $11.59 -42.02% $5.79 RM24.50 at -50%
Colombian Peso COL$ 47500 $11.64 -41.74% $5.82 COL$ 23750 at -50%
Qatari Riyal 43.99 QR $12.08 -39.55% $6.04 21.99 QR at -50%
Peruvian Sol S/.43.00 $12.09 -39.49% $6.04 S/.21.50 at -50%
Mexican Peso Mex$ 227.99 $12.23 -38.80% $6.11 Mex$ 113.99 at -50%
Thai Baht ฿400.00 $12.37 -38.12% $6.18 ฿200.00 at -50%
Singapore Dollar S$18.50 $14.39 -27.98% $7.19 S$9.25 at -50%
U.A.E. Dirham 53.00 AED $14.42 -27.82% $7.21 26.50 AED at -50%
Uruguayan Peso $U595 $14.81 -25.87% $7.39 $U297 at -50%
Japanese Yen ¥ 2200 $14.93 -25.26% $7.46 ¥ 1100 at -50%
South Korean Won ₩ 21500 $15.52 -22.34% $7.76 ₩ 10750 at -50%
Hong Kong Dollar HK$ 125.00 $15.92 -20.34% $7.96 HK$ 62.50 at -50%
Costa Rican Colon ₡8500 $16.78 -16.02% $8.39 ₡4250 at -50%
New Zealand Dollar NZ$ 28.99 $17.21 -13.89% $8.60 NZ$ 14.49 at -50%
Canadian Dollar CDN$ 25.99 $18.91 -5.38% $9.45 CDN$ 12.99 at -50%
Australian Dollar A$ 29.50 $19.18 -4.03% $9.59 A$ 14.75 at -50%
Israeli New Shekel ₪73.95 $21.56 +7.86% $10.77 ₪36.97 at -50%
Norwegian Krone 220,00 kr $21.58 +8.00% $10.79 110,00 kr at -50%
British Pound £16.75 $22.37 +11.93% $11.18 £8.37 at -50%
Euro 19,50€ $22.71 +13.61% $11.35 9,75€ at -50%
Polish Zloty 91,99zł $25.05 +25.35% $12.52 45,99zł at -50%
Swiss Franc CHF 21.99 $27.30 +36.61% $13.64 CHF 10.99 at -50%
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 213℉
controller_support partial
DLCAvailableOnStore Yes
ReleaseState released
Publisher Aniplex Inc.
Store Release Date 1 December 2023 – 14:50:53 UTC ()
osarch 64
community_hub_visible Yes
Social Media https://x.com/mm_paradox
Primary Genre Adventure (25)
Store Genres Adventure (25), Indie (23)
Steam Release Date 1 December 2023 – 14:50:49 UTC ()
Store Asset Modification Time 24 June 2024 – 09:40:57 UTC () (1719222057)
library_assets
library_capsuleen,ja,zh-cn
library_heroen,ja,zh-cn
library_logoen
library_headeren,ja
logo_position ↴
pinned_positionBottomLeft
width_pct72.54760127032077
height_pct88.15384594527927
osextended empty string
review_score 8
review_percentage 85
Steam Deck Compatibility
  • Steam Deck:
  • Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
  • This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
  • Some in-game text is small and may be difficult to read
  • This game's default graphics configuration performs well on Steam Deck
  •  
  • SteamOS:
  • This game runs successfully on SteamOS
  • Note: Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
  •  
  • category: Playable
  • steamos_compatibility: Compatible
  • test_timestamp: 20 June 2025 – 00:00:00 UTC
  • tested_build_id: 12839277
  • configuration:
    supported_inputother
    requires_manual_keyboard_invoke0
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_00
    non_deck_display_glyphs1
    small_text1
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimeproton-9.0-3RC
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
Content Descriptors Frequent Violence or Gore (2), General Mature Content (5)
controllertagwizard Yes
First seen on SteamDB 28 October 2022 – 03:37:48 UTC (), in changelist #16520919
Content Descriptors (Including DLC) Frequent Violence or Gore (2), General Mature Content (5)

Supported Languages

1 Languages Interface Full Audio Subtitles
Japanese Yes Yes

Assets

Load all asset images
clienticon 70dc5a331dd50520a240593773436521127c5d6a
clienttga 4c268ff2ef281b7ce078f191eeb0f9d2d28ec64e
icon 5dcd6e7150985bd292a7fffa851c6289714fbc09
small_capsule
englishcapsule_231x87.jpg
japanesecapsule_231x87_japanese.jpg
schinesecapsule_231x87_schinese.jpg
header_image
englishheader.jpg
japaneseheader_japanese.jpg
schineseheader_schinese.jpg
library_assets_full
library_capsule ↴
image/englishlibrary_600x900.jpg
image/japaneselibrary_600x900_japanese.jpg
image/schineselibrary_600x900_schinese.jpg
image2x/englishlibrary_600x900_2x.jpg
image2x/japaneselibrary_600x900_japanese_2x.jpg
image2x/schineselibrary_600x900_schinese_2x.jpg
library_hero ↴
image/englishlibrary_hero.jpg
image/japaneselibrary_hero_japanese.jpg
image/schineselibrary_hero_schinese.jpg
image2x/englishlibrary_hero_2x.jpg
image2x/japaneselibrary_hero_japanese_2x.jpg
image2x/schineselibrary_hero_schinese_2x.jpg
library_logo ↴
image/englishlogo.png
image2x/englishlogo_2x.png
logo_position/pinned_positionBottomLeft
logo_position/width_pct72.54760127032077
logo_position/height_pct88.15384594527927
library_header ↴
image/englishlibrary_header.jpg
image/japaneselibrary_header_japanese.jpg
Assets
main_capsulecapsule_616x353.jpg
small_capsulecapsule_231x87.jpg
headerheader.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_icon5dcd6e7150985bd292a7fffa851c6289714fbc09.jpg
page_background_pathapp/2203040
timestamp21 October 2024 – 04:11:12 UTC
Trailers
257012657 ↴
trailer_name予告
trailer_category0
trailer_480p/video/webm257012657/movie480_vp9.webm
trailer_480p/video/mp4257012657/movie480.mp4
trailer_max/video/webm257012657/movie_max_vp9.webm
trailer_max/video/mp4257012657/movie_max.mp4
microtrailer/video/webm2203040/682091/095f262c1fc5ac00236fb4e95abbcb7c28a6bb1a/1751089421/microtrailer.webm
microtrailer/video/mp42203040/682091/095f262c1fc5ac00236fb4e95abbcb7c28a6bb1a/1751089421/microtrailer.mp4
screenshot_medium257012657/movie.293x165.jpg
screenshot_full257012657/movie_full.jpg
trailer_base_id682091
all_agestrue
is_highlighttrue
timestamp1712038295
257011702 ↴
trailer_nameOP
trailer_category0
trailer_480p/video/webm257011702/movie480_vp9.webm
trailer_480p/video/mp4257011702/movie480.mp4
trailer_max/video/webm257011702/movie_max_vp9.webm
trailer_max/video/mp4257011702/movie_max.mp4
microtrailer/video/webm2203040/680467/6ee5f7c6fdcf40a75d351d45db91c8ab1edbaef5/1751089421/microtrailer.webm
microtrailer/video/mp42203040/680467/6ee5f7c6fdcf40a75d351d45db91c8ab1edbaef5/1751089421/microtrailer.mp4
screenshot_medium257011702/movie.293x165.jpg
screenshot_full257011702/movie_full.jpg
trailer_base_id680467
all_agestrue
is_highlighttrue
timestamp1711597006
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