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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 29769497
Last Record Update 26 June 2025 – 17:13:40 UTC ()
Release Date 1 December 2023 – 14:50:49 UTC ()
❓ 78.77%
195 reviews
2
In-Game

"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.

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 86
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

Tags

🗺️ Adventure 📚 Visual Novel 🧚 Choose Your Own Adventure 🏽 2D 🌸 Anime 🎨 Colorful 📝 Text-Based 📺 Split Screen 🎭 Drama ⏳ Time Travel 😱 Horror 🤫 Mystery 💘 Romance 🕳️ Underground 🫂 Psychological 💔 Emotional 🗡️ Assassin 🔍 Hidden Object 🌆 Futuristic 🕰️ Alternate History

Categories

Single-player Family Sharing

Hardware Categories

Partial Controller Support DualShock Controllers (USB Only) DualShock Controllers

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

Steam charts

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  • 2 players right now
  • 25 24-hour peak
  • 288 all-time peak 3 December 2023
SteamDB.info

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Store data

  • 1,444 followers
  • 168 positive reviews
  • 27 negative reviews
  • 86.15% positive reviews

Twitch stats

  • 0 viewers right now
  • 7 24-hour peak
  • 1,741 all-time peak
  •  

Owner estimations

Monthly players breakdown

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Steam hub followers history

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User reviews history

  • ❓ Very Positive
  • 78.77% SteamDB Rating
  • 168 86.2% positive reviews
  • 27 13.8% negative reviews

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How many players are playing マーダーミステリーパラドクス このひと夏の十五年 right now on Steam?

Steam player counter indicates there are currently 2 players live playing マーダーミステリーパラドクス このひと夏の十五年 on Steam.

マーダーミステリーパラドクス このひと夏の十五年 had an all-time peak of 288 concurrent players on 3 December 2023.

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