Agent Sirius
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!
- Price:$9.99
- Release Date:4/11/2026
- Developer:Lunarian
- Publisher:Saikey Studios
- Last Updated:5/30/2026
- Steam App Id:3517070
Agent Sirius
- Windows
- Mac
- Linux
- Steam Deck (Verified)
Steam Charts, Stats, and Live Player Count
At the moment, Agent Sirius has 3 concurrent players online and in-game. This is 88% lower than its previous all-time peak of 26 players achieved on 4/12/2026.
Agent Sirius Review
Agent Sirius has achieved a Steambase Player Score of 92 / 100. This score is calculated from 36 total reviews on the Steam store — giving it a Positive rating. These are split between 33 positive reviews, 3 negative reviews, and will be updated in real-time as more players leave their feedback.
Track historical reviews and overall rating trends for Agent Sirius using the chart below.
Agent Sirius Price
Agent Sirius costs $9.99 in the Steam store as of 5/30/2026. It can be purchased as a standalone game or through a bundle like NTR which offers a discount off the game's base price.
Explore the price history chart below to track historical price changes and other pricing stats for Agent Sirius.
Agent Sirius Deals & Discounts
Discover exclusive deals and unbeatable discounts for Agent Sirius through our partner marketplaces. Get a large discount (sometimes 80% off) by purchasing your Steam key through them.
We only work with the best and most-trusted marketplaces to ensure a smooth experience. After purchase, you will immediately receive your Steam key and game activation code. Take advantage of these offers and dive into the world of Agent Sirius without hurting your wallet.
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About Agent Sirius
Agent Sirius is an Adventure, and RPG game developed by Lunarian. On 4/11/2026, it was released on the Steam Store by Saikey Studios.
It can be played and ran on Windows systems. It is verified by Valve as playable on the Steam Deck and will run well.
According to Steam’s category system, Agent Sirius supports the following features:
- Single-player
- Family Sharing
- Steam Achievements
- Steam Cloud
From the Steam community, Agent Sirius has been tagged with the following user tags:
- Drama
- Supernatural
- Nonlinear
- JRPG
- Fantasy
- Multiple Endings
- Pixel Graphics
- Choices Matter
- RPG
- Psychological Horror
- Mystery
- Horror
- Sexual Content
- Detective
- Anime
- Colorful
- Demons
- Adventure
- Singleplayer
- Female Protagonist
- 2D
Media & Sceenshots
Watch the featured video for Agent Sirius and see the latest screenshots from the Steam Store.
Related Bundles
Agent Sirius is included in 1 bundle in the Steam Store.
Related Packages
Agent Sirius is referenced by 1 package in the Steam Store.
| Name | Price | Actions |
|---|---|---|
| Agent Sirius | $7.99 | View |
Supported Languages
Agent Sirius is available in 4 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | No | Yes |
| Japanese | Yes | Yes | Yes |
| Chinese (Simplified) | Yes | No | Yes |
| Chinese (Traditional) | Yes | No | Yes |
Frequently Asked Questions
Soures & References
Steambase has best-in-class data powered directly by Steam, our data partners, and in-house experts. Data is enriched, cleansed, verified, and updated in real-time to ensure we surface the most up-to-date information. Learn more about the Steambase approach to data collection.
Agent Sirius data has been sourced from:
- Valve Corporation. (2026, May 30). Agent Sirius on Steam. Steam Store. https://store.steampowered.com/app/3517070
- Valve Corporation. (2026, May 30). Agent Sirius. Steam Community Hub. https://steamcommunity.com/app/3517070
- Lunarian. (2025, February 25). Agent Sirius. Agent Sirius. https://saikeystudios.com