Hell's 8th Avenue: Miori's Mysterious Notebook

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App ID	3641720
App Type	Game
Developer	Magical Ponpon
Publisher	Saikey Studios
Franchise	Saikey Studios
Supported Systems	Windows
Technologies	RPGMaker Engine
Last Changenumber	31516757
Last Record Update	7 October 2025 – 00:30:42 UTC ()
Release Date	23 August 2025 – 03:22:22 UTC ()

❓ 71.23%

47 reviews

In-Game

In this adventure game, play as Miori, a young detective tasked with finding a missing person and purifying the ominous 'Illusory 8th Street.' Challenge your dexterity with fun Quick Time Events and push forward... or get punished for being too slow.

Additional Information

Developer

Magical Ponpon

community_visible_stats

Yes

ReleaseState

released

Publisher

Saikey Studios

Store Release Date

23 August 2025 – 03:22:25 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), RPG (3)

Steam Release Date

23 August 2025 – 03:22:22 UTC ()

Store Asset Modification Time

15 August 2025 – 16:34:49 UTC () (1755275689)

library_assets

library_capsule	en,ja,zh-tw,zh-cn
library_hero	en
library_hero_blur	en
library_logo	en,ja,zh-cn,zh-tw
library_header	en,ja,zh-cn,zh-tw
logo_position ↴
pinned_position	CenterCenter
width_pct	76.30966239813736
height_pct	87.61576822607456

osextended

empty string

name_localized

japanese	地獄の８番街・少女探偵ミオリの怪異ノート
schinese	地狱的八号街·少女侦探美织的怪异笔记本
tchinese	地獄的八號街·少女偵探美織的怪異筆記本

review_score

review_percentage

Detected Technologies (?)

RPGMaker Engine, Greenworks SDK, NWJS SDK, NodeJS SDK, Vorbis SDK

Steam Deck Compatibility

Steam Deck:
All functionality is accessible when using the default controller configuration
This game shows Steam Deck controller icons
In-game interface text is legible on Steam Deck
This game's default graphics configuration performs well on Steam Deck
Note: This game does not default to external Bluetooth/USB controllers on Deck, and may require manually switching the active controller via the Quick Access Menu
SteamOS:
This game runs successfully on SteamOS
Note: This game does not default to external Bluetooth/USB controllers on SteamOS, and may require manually switching the active controller via the Quick Access Menu
category: Verified
steamos_compatibility: Compatible
test_timestamp: 30 September 2025 – 00:00:00 UTC
tested_build_id: 19742974

configuration:

supported_input	gamepad
requires_manual_keyboard_invoke	0
requires_non_controller_launcher_nav	0
primary_player_is_controller_slot_0	1
non_deck_display_glyphs	0
small_text	0
requires_internet_for_setup	0
requires_internet_for_singleplayer	0
recommended_runtime	proton-10.0-beta
requires_h264	0
requires_voice_files	0
gamescope_frame_limiter_not_supported	0
hdr_support	0

Content Descriptors

General Mature Content (5)

controllertagwizard

Yes

AI Content Type

First seen on SteamDB

2 April 2025 – 22:43:14 UTC (), in changelist #28277976

Content Descriptors (Including DLC)

General Mature Content (5)

Supported Languages

4 Languages	Interface	Full Audio	Subtitles	Achievements
English	Yes		Yes	Yes
Japanese	Yes	Yes	Yes	Yes
Simplified Chinese	Yes		Yes	Yes
Traditional Chinese	Yes		Yes	Yes

Assets

Load all asset images

clienticon

75b53b430e4d512b3ae811a4a3ebdc37f93d3104

clienttga

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icon

efa9ee961463bc0801b610bbc4b5132572e5eb03

small_capsule

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japanese	8d9ab7acc414da51ced4de642b01b7b42686ea42/capsule_231x87_japanese.jpg
schinese	fedac97cedbf1a42a8fc0210cc0225824eeedc99/capsule_231x87_schinese.jpg
tchinese	444b999a477beafe4a7c00f00039d7067193a25d/capsule_231x87_tchinese.jpg

header_image

english	6153f9df5a25b014d1737297b674b6146fc091b0/header.jpg
japanese	0b63ee3fb0065030d2889be165888055b6c53c38/header_japanese.jpg
schinese	3b89b0022665b35fcdefe4225072b6134f7390ec/header_schinese.jpg
tchinese	778d476aa62733e967469f83fc3c647deef85d88/header_tchinese.jpg

library_assets_full

library_capsule ↴
image/english	8b458f058c79e9a526552f76cb520e0dfcfef27c/library_600x900.jpg
image/japanese	25b4a577f1ef764b961f974cf7ff19767f9e02aa/library_600x900_japanese.jpg
image/tchinese	a4ebcc08edf2243ddcfe4a98030466adf9b2fe85/library_600x900_tchinese.jpg
image/schinese	09f3320e3afe64d838823318667a12bf83141f36/library_600x900_schinese.jpg
image2x/english	8b458f058c79e9a526552f76cb520e0dfcfef27c/library_600x900_2x.jpg
image2x/japanese	25b4a577f1ef764b961f974cf7ff19767f9e02aa/library_600x900_japanese_2x.jpg
image2x/tchinese	a4ebcc08edf2243ddcfe4a98030466adf9b2fe85/library_600x900_tchinese_2x.jpg
image2x/schinese	09f3320e3afe64d838823318667a12bf83141f36/library_600x900_schinese_2x.jpg
library_hero ↴
image2x/english	0e4ab9983e128b9969d56b5d87b5f81ac3207afa/library_hero_2x.jpg
image/english	0e4ab9983e128b9969d56b5d87b5f81ac3207afa/library_hero.jpg
library_hero_blur ↴
image/english	0e4ab9983e128b9969d56b5d87b5f81ac3207afa/library_hero_blur.jpg
library_logo ↴
image/english	7e5264b465e173120383e14cfd66850c438db8fb/logo.png
image/japanese	e6c5ada087cf3aac6c2cb1fd5c165ed8de84ba05/logo_japanese.png
image/schinese	24548524f26e896477621f0499b86a5a0f9608df/logo_schinese.png
image/tchinese	6821c8eb4e76f19bb9259e452aa23a9cf09ac087/logo_tchinese.png
image2x/english	7e5264b465e173120383e14cfd66850c438db8fb/logo_2x.png
image2x/japanese	e6c5ada087cf3aac6c2cb1fd5c165ed8de84ba05/logo_japanese_2x.png
image2x/schinese	24548524f26e896477621f0499b86a5a0f9608df/logo_schinese_2x.png
image2x/tchinese	6821c8eb4e76f19bb9259e452aa23a9cf09ac087/logo_tchinese_2x.png
logo_position/pinned_position	CenterCenter
logo_position/width_pct	76.30966239813736
logo_position/height_pct	87.61576822607456
library_header ↴
image/english	6153f9df5a25b014d1737297b674b6146fc091b0/library_header.jpg
image/japanese	0b63ee3fb0065030d2889be165888055b6c53c38/library_header_japanese.jpg
image/schinese	3b89b0022665b35fcdefe4225072b6134f7390ec/library_header_schinese.jpg
image/tchinese	778d476aa62733e967469f83fc3c647deef85d88/library_header_tchinese.jpg
image2x/english	6153f9df5a25b014d1737297b674b6146fc091b0/library_header_2x.jpg
image2x/japanese	0b63ee3fb0065030d2889be165888055b6c53c38/library_header_japanese_2x.jpg
image2x/schinese	3b89b0022665b35fcdefe4225072b6134f7390ec/library_header_schinese_2x.jpg
image2x/tchinese	778d476aa62733e967469f83fc3c647deef85d88/library_header_tchinese_2x.jpg

Assets

main_capsule	fbac88554e8298bb244dcb324a2b86ab2d8c2ec6/capsule_616x353.jpg
small_capsule	1657766dac88cc790119f5dc564f35f55e331acb/capsule_231x87.jpg
header	6153f9df5a25b014d1737297b674b6146fc091b0/header.jpg
page_background	201a95bd697a460ab0f35ec1d1611ae6c41ecba2/page_bg_v6.jpg
hero_capsule	2f59ba296d04ef94bd3a1b21b15db9ed865d0421/hero_capsule.jpg
hero_capsule_2x	2f59ba296d04ef94bd3a1b21b15db9ed865d0421/hero_capsule_2x.jpg
library_capsule	8b458f058c79e9a526552f76cb520e0dfcfef27c/library_600x900.jpg
library_capsule_2x	8b458f058c79e9a526552f76cb520e0dfcfef27c/library_600x900_2x.jpg
library_hero	0e4ab9983e128b9969d56b5d87b5f81ac3207afa/library_hero.jpg
library_hero_2x	0e4ab9983e128b9969d56b5d87b5f81ac3207afa/library_hero_2x.jpg
community_icon	efa9ee961463bc0801b610bbc4b5132572e5eb03.jpg
page_background_path	app/3641720
raw_page_background	201a95bd697a460ab0f35ec1d1611ae6c41ecba2/page_bg_raw.jpg
timestamp	23 August 2025 – 04:12:52 UTC

Trailers

889712 ↴
trailer_name	EN
trailer_category	3
trailer_480p/video/webm	257138651/movie480_vp9.webm
trailer_480p/video/mp4	257138651/movie480.mp4
trailer_max/video/webm	257138651/movie_max_vp9.webm
trailer_max/video/mp4	257138651/movie_max.mp4
microtrailer/video/webm	3641720/906144920/a0f1eae1873c58f7ab93487833ac67fe24346448/1754961839/microtrailer.webm
microtrailer/video/mp4	3641720/906144920/a0f1eae1873c58f7ab93487833ac67fe24346448/1754961839/microtrailer.mp4
adaptive_trailers/0/cdn_path	3641720/906144920/a0f1eae1873c58f7ab93487833ac67fe24346448/1754961839/dash_av1.mpd
adaptive_trailers/0/encoding	dash_av1
adaptive_trailers/1/cdn_path	3641720/906144920/a0f1eae1873c58f7ab93487833ac67fe24346448/1754961839/dash_h264.mpd
adaptive_trailers/1/encoding	dash_h264
adaptive_trailers/2/cdn_path	3641720/906144920/a0f1eae1873c58f7ab93487833ac67fe24346448/1754961839/hls_264_master.m3u8
adaptive_trailers/2/encoding	hls_h264
screenshot_medium	257138651/3652bc938fa98c90911b06a11b7f9413ad57a399/movie_600x337.jpg
screenshot_full	257138651/3652bc938fa98c90911b06a11b7f9413ad57a399/movie_full.jpg
all_ages	true
is_highlight	true
timestamp	1754966896

Depots

ID	Configuration	Size	DL.
3641721	English	1.08 GiB	669.98 MiB
3641722	Japanese	1.08 GiB	670.93 MiB
3641723	Simplified Chinese	1.08 GiB	670.05 MiB
3641724	Traditional Chinese	1.08 GiB	670.08 MiB

Total size on disk is 4.33 GiB and total download size is 2.62 GiB.

Total size on disk is 1.08 GiB and total download size is 669.98 MiB, when filtered to Windows, English, no DLC depots.

Branches

Name	Description	Build ID	Time Updated
public		19742974	26 August 2025 – 16:17:31 UTC

Other

Name	Value
baselanguages	English, Simplified Chinese, Traditional Chinese, Japanese

Hell's 8th Avenue: Miori's Mysterious Notebook

Additional Information

Supported Languages

Tags

Categories

Assets

Depots

Branches

Other