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Agent Sirius

Wishlist Follow Ignore Launch Unwatch Watch
App ID 3517070
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 – 22:52:01 UTC ()
Release Date 11 April 2026 – 03:31:01 UTC ()
❓ 74.51%
43 reviews
0
In-Game
🌸 Anime 🌸 JRPG 🕵️ Detective 🤫 Mystery 🧞 Choices Matter

Join Beni Akesuzu, the high school detective president and secret agent, in this thrilling mystery RPG! Investigate mysterious incidents, solve puzzles,and uncover a sinister plot as monsters lurk in the shadows in a race to save the school and it's students before it’s too late!

Steam price history

Special Promotion, ends 8 October 2026
Current Price -20% $7.99
Lowest Recorded Price -30% $6.99 25 June 2026
Currency Current Price Converted Price Lowest Recorded Price
U.S. Dollar -20% $7.99 $7.99 $6.99 -30% $6.99
Russian Ruble -20% 308 ₽ $3.69 -53.76% $3.22 -30% 269 ₽
Indian Rupee -20% ₹ 384 $3.98 -50.08% $3.49 -30% ₹ 336
Ukrainian Hryvnia -20% 180₴ $4.00 -49.87% $3.49 -30% 157₴
Indonesian Rupiah -20% Rp 72799 $4.07 -49.05% $3.56 -30% Rp 63699
Philippine Peso -20% ₱268.00 $4.27 -46.45% $3.74 -30% ₱234.50
Vietnamese Dong -20% 113500₫ $4.36 -45.35% $3.82 -30% 99500₫
SASIA - U.S. Dollar -20% $4.39 $4.39 -45.06% $3.84 -30% $3.84
LATAM - U.S. Dollar -20% $4.63 $4.63 -42.05% $4.05 -30% $4.05
MENA - U.S. Dollar -20% $4.63 $4.63 -42.05% $4.05 -30% $4.05
Chilean Peso -20% CLP$ 4600 $4.68 -41.35% $4.10 -30% CLP$ 4025
Taiwan Dollar -20% NT$ 150 $4.70 -41.18% $4.10 -30% NT$ 131
Saudi Riyal -20% 17.99 SR $4.77 -40.18% $4.18 -30% 15.74 SR
South African Rand -20% R 80.00 $4.79 -39.99% $4.19 -30% R 70.00
Chinese Yuan -20% ¥ 33.60 $5.01 -37.28% $4.38 -30% ¥ 29.40
CIS - U.S. Dollar -20% $5.03 $5.03 -37.05% $4.40 -30% $4.40
Brazilian Real -20% R$ 26,39 $5.04 -36.81% $4.41 -30% R$ 23,09
Kuwaiti Dinar -20% 1.56 KD $5.05 -36.79% $4.40 -30% 1.36 KD
Kazakhstani Tenge -20% 2320₸ $5.23 -34.53% $4.57 -30% 2030₸
Thai Baht -20% ฿176.00 $5.23 -34.44% $4.58 -30% ฿154.00
Malaysian Ringgit -20% RM21.40 $5.23 -34.42% $4.58 -30% RM18.72
Peruvian Sol -20% S/.18.40 $5.30 -33.61% $4.64 -30% S/.16.10
Mexican Peso -20% Mex$ 99.19 $5.42 -32.07% $4.74 -30% Mex$ 86.79
Qatari Riyal -20% 19.99 QR $5.48 -31.36% $4.79 -30% 17.49 QR
Japanese Yen -20% ¥ 960 $6.08 -23.87% $5.32 -30% ¥ 840
Uruguayan Peso -20% $U248 $6.15 -22.99% $5.38 -30% $U217
Singapore Dollar -20% S$8.00 $6.25 -21.74% $5.47 -30% S$7.00
Colombian Peso -20% COL$ 20800 $6.25 -21.72% $5.47 -30% COL$ 18200
U.A.E. Dirham -20% 23.20 AED $6.31 -20.94% $5.52 -30% 20.30 AED
South Korean Won -20% ₩ 8800 $6.50 -18.54% $5.69 -30% ₩ 7700
New Zealand Dollar -20% NZ$ 11.80 $6.62 -17.13% $5.79 -30% NZ$ 10.32
Hong Kong Dollar -20% HK$ 52.80 $6.72 -15.78% $5.88 -30% HK$ 46.20
Canadian Dollar -20% CDN$ 10.39 $7.30 -8.54% $6.39 -30% CDN$ 9.09
Australian Dollar -20% A$ 11.60 $8.04 +0.65% $7.03 -30% A$ 10.15
Costa Rican Colon -20% ₡3680 $8.04 +0.73% $7.04 -30% ₡3220
Euro -20% 7,80€ $8.77 +9.80% $7.67 -30% 6,82€
British Pound -20% £6.80 $8.98 +12.40% $7.85 -30% £5.95
Norwegian Krone -20% 88,00 kr $9.14 +14.45% $8.00 -30% 77,00 kr
Polish Zloty 36,79zł $9.45 +18.37% $8.27 -30% 32,19zł
Israeli New Shekel -20% ₪29.56 $9.62 +20.44% $8.41 -30% ₪25.86
Swiss Franc -20% CHF 8.79 $10.59 +32.61% $9.26 -30% CHF 7.69
Valve suggested prices are shown on package pages.

Price history

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Click on a currency name to load price history for that particular currency.
View lowest recorded prices on Steam store pages by using our browser extension.

Additional Information

Developer Lunarian
community_visible_stats Yes
ReleaseState released
Publisher Saikey Studios
Store Release Date 11 April 2026 – 03:31:03 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 RPG (3)
Store Genres Adventure (25), RPG (3)
Steam Release Date 11 April 2026 – 03:31:01 UTC ()
Store Asset Modification Time 2 January 2026 – 04:14:56 UTC () (1767327296)
library_assets
library_capsuleen,ja,zh-cn,zh-tw
library_heroen
library_hero_bluren
library_logoen,ja,zh-cn,zh-tw
library_headeren,ja,zh-cn,zh-tw
logo_position ↴
pinned_positionCenterCenter
width_pct84.07234539089848
height_pct100
osextended empty string
name_localized
japaneseエージェント・シリウス
schinese特工·天狼星
tchinese特工·天狼星
review_score 7
review_percentage 81
Detected Technologies RPGMaker Engine, Greenworks SDK, NWJS SDK, NodeJS 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
  • steam_machine_compatibility: 3
  • test_timestamp: 10 April 2026 – 00:00:00 UTC
  • tested_build_id: 22343835
  • steam_machine_tests:
    0 ↴
    display4
    token#SteamMachine_TestResult_DefaultControllerConfigFullyFunctional
    1 ↴
    display4
    token#SteamMachine_TestResult_ControllerGlyphsMatchDevice
    2 ↴
    display4
    token#SteamMachine_TestResult_DefaultConfigurationIsPerformant
  • configuration:
    supported_inputgamepad
    requires_manual_keyboard_invoke0
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_01
    non_deck_display_glyphs0
    small_text0
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimeproton-stable
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
    requires_proton_soundfonts0
controllertagwizard Yes
disable_user_media_upload empty string
First seen on SteamDB 6 February 2025 – 11:42:39 UTC (), in changelist #27343954
disable_user_facing_ugc 1

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 195d338f72849a73b34390a3b455b923481420de
clienttga 69dcdd19065efd68a11cd714ed6b71d523e2b01e
icon a69f1c9e84425365c314794d52159e87f00811b3
small_capsule
englishda94e5df2b11710eb5fde0c6230bec2cbb2e7aa4/capsule_231x87.jpg
japanese49a4325f7ac1deb7ef72c70e1e738bc36b38f889/capsule_231x87_japanese.jpg
schinesea9d31e84efe67901b9492126eba31210cc4c71b5/capsule_231x87_schinese.jpg
tchinese3056b6f0daa11c9be301f8f7a579a19c16f04ff6/capsule_231x87_tchinese.jpg
header_image
englishheader.jpg
schineseheader_schinese.jpg
japaneseheader_japanese.jpg
tchineseheader_tchinese.jpg
library_assets_full
library_capsule ↴
image/englishc88bdacddd989cb658d56938fb6f9e07f6c47a79/library_600x900.jpg
image/japanese5caa4f8aa05c01451d86828879effc7061ee3886/library_600x900_japanese.jpg
image/schinesefcdb27b7b6dd88dd3fd7e9e16eed943d205fe74c/library_600x900_schinese.jpg
image/tchinesea7dc4fa931b1cc8bc82fdbbb3cf411ce5ef8386e/library_600x900_tchinese.jpg
image2x/englishc88bdacddd989cb658d56938fb6f9e07f6c47a79/library_600x900_2x.jpg
image2x/japanese5caa4f8aa05c01451d86828879effc7061ee3886/library_600x900_japanese_2x.jpg
image2x/schinesefcdb27b7b6dd88dd3fd7e9e16eed943d205fe74c/library_600x900_schinese_2x.jpg
image2x/tchinesea7dc4fa931b1cc8bc82fdbbb3cf411ce5ef8386e/library_600x900_tchinese_2x.jpg
library_hero ↴
image2x/englishb9ad87fa6e8930e0bf61403b50eb1a5aea95e8ff/library_hero_2x.jpg
image/englishb9ad87fa6e8930e0bf61403b50eb1a5aea95e8ff/library_hero.jpg
library_hero_blur ↴
image/englishb9ad87fa6e8930e0bf61403b50eb1a5aea95e8ff/library_hero_blur.jpg
library_logo ↴
image/englishbd11f649d05156e7321958c5c1469fa5df244171/logo.png
image/japanese4d93ec5a8d4bdc6e9d2ac02c055fe442c615db9c/logo_japanese.png
image/schinese783ae08ee6a61b0c0fe0e43ecfae361023149d41/logo_schinese.png
image/tchinese00d2d52fd24215081b188a5f86bb6a801cf905e8/logo_tchinese.png
image2x/englishbd11f649d05156e7321958c5c1469fa5df244171/logo_2x.png
image2x/japanese4d93ec5a8d4bdc6e9d2ac02c055fe442c615db9c/logo_japanese_2x.png
image2x/schinese783ae08ee6a61b0c0fe0e43ecfae361023149d41/logo_schinese_2x.png
image2x/tchinese00d2d52fd24215081b188a5f86bb6a801cf905e8/logo_tchinese_2x.png
logo_position/pinned_positionCenterCenter
logo_position/width_pct84.07234539089848
logo_position/height_pct100
library_header ↴
image/englishbbf0823a17a0b10e28b286073cb91a85cce50585/library_header.jpg
image/japanese0549ce807b9c2dd86dcfb1371065779319da9098/library_header_japanese.jpg
image/schinese27fe0e4ef7397f527adbe1ae5afcea0bbf819eb0/library_header_schinese.jpg
image/tchinese8bac76edba494c2cdec25607d363cbd7cebf5b26/library_header_tchinese.jpg
image2x/englishbbf0823a17a0b10e28b286073cb91a85cce50585/library_header_2x.jpg
image2x/japanese0549ce807b9c2dd86dcfb1371065779319da9098/library_header_japanese_2x.jpg
image2x/schinese27fe0e4ef7397f527adbe1ae5afcea0bbf819eb0/library_header_schinese_2x.jpg
image2x/tchinese8bac76edba494c2cdec25607d363cbd7cebf5b26/library_header_tchinese_2x.jpg
Assets
main_capsule43da9493405e73043833aceef67347e87794ac40/capsule_616x353.jpg
main_capsule_2x43da9493405e73043833aceef67347e87794ac40/capsule_616x353_2x.jpg
small_capsuleda94e5df2b11710eb5fde0c6230bec2cbb2e7aa4/capsule_231x87.jpg
small_capsule_2xda94e5df2b11710eb5fde0c6230bec2cbb2e7aa4/capsule_231x87_2x.jpg
headerheader.jpg
header_2xheader_2x.jpg
page_backgroundpage_bg_generated_v6b.jpg
hero_capsuled9c29bdfa8b31b8e97bc19cecda4dee87a3fb169/hero_capsule.jpg
hero_capsule_2xd9c29bdfa8b31b8e97bc19cecda4dee87a3fb169/hero_capsule_2x.jpg
library_capsulec88bdacddd989cb658d56938fb6f9e07f6c47a79/library_600x900.jpg
library_capsule_2xc88bdacddd989cb658d56938fb6f9e07f6c47a79/library_600x900_2x.jpg
library_herob9ad87fa6e8930e0bf61403b50eb1a5aea95e8ff/library_hero.jpg
library_hero_2xb9ad87fa6e8930e0bf61403b50eb1a5aea95e8ff/library_hero_2x.jpg
community_icona69f1c9e84425365c314794d52159e87f00811b3.jpg
page_background_pathapp/3517070
raw_page_backgroundpage_bg_raw.jpg
last_modified11 April 2026 – 03:31:02 UTC
timestamp11 April 2026 – 03:31:02 UTC

Trailer 1064851 ↴

trailer_name English
trailer_category 0
microtrailer ↴
video/webm 3517070/350303720/bfdc4fd23dfd373b81255346f62796e7773d4ef6/1767325333/microtrailer.webm
video/mp4 3517070/350303720/bfdc4fd23dfd373b81255346f62796e7773d4ef6/1767325333/microtrailer.mp4
adaptive_trailers ↴
dash_av1 3517070/350303720/bfdc4fd23dfd373b81255346f62796e7773d4ef6/1767325333/dash_av1.mpd
dash_h264 3517070/350303720/bfdc4fd23dfd373b81255346f62796e7773d4ef6/1767325333/dash_h264.mpd
hls_h264 3517070/350303720/bfdc4fd23dfd373b81255346f62796e7773d4ef6/1767325333/hls_264_master.m3u8
screenshot_medium 257258034/7f03b4091cfc47a886ab5d49951c14bb23d68319/movie_600x337.jpg
screenshot_full 257258034/7f03b4091cfc47a886ab5d49951c14bb23d68319/movie_full.jpg
all_ages true
is_highlight true
timestamp 2 January 2026 – 17:04:40 UTC
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