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// Agent Sirius(2026)

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About 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!
Release Date
Apr 11, 2026
Publisher
Saikey Studios
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Agent Sirius FAQ & buying guide

Is Agent Sirius worth buying?

Steam
91.67% positive
'Positive', 36 reviews

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What is Agent Sirius about?

An uneasy atmosphere grips Star Haven High School. Mysterious incidents targeting girls begin to unfold one after another, and rumors soon spread of things more suited to urban legends. And it is up to Beni Akesuzu as the head of the detective club to get to the bottom of these incidents. But even she has a secret: she’s a secret agent for Bancho, a secret organisation specialising in dealing with the supernatural, and they know the truth. That real monsters lurk in the shadows, plotting to brainwash everyone in the school. So far, Beni has narrowed her list of suspects, including both teachers and students. Now, it’s up to her and her friend, a fellow detective club member Nadeshiko to track down the culprits and solve the puzzle in a race to save the school and its students before it’s too late!

Game modes: Single player

Quick answers

What is the cheapest place to buy Agent Sirius?

Right now the lowest price for Agent Sirius we're tracking is $9.99 at Steam. We compare 1 store and prices refresh every few minutes.

What is the lowest price Agent Sirius has ever been?

The lowest price we've recorded for Agent Sirius is $7.99 at Steam on April 15, 2026. The current best price is about 25% above that low.

Is Agent Sirius worth buying?

92% of 36 Steam user reviews for Agent Sirius are positive ("Positive").

When was Agent Sirius released?

Agent Sirius released on April 11, 2026 and published by Saikey Studios.

What platforms is Agent Sirius available on?

Agent Sirius is available on PC (Microsoft Windows). It supports single player.

When do Agent Sirius prices drop?

Agent Sirius last hit a new low of $7.99 on April 15, 2026 at Steam. Current best price is $9.99. Prices on this page refresh every few minutes, so check back around seasonal sales for new lows.

Where's the cheapest place to buy Agent Sirius?

The cheapest Agent Sirius price right now is $9.99 at Steam.

Agent Sirius price comparison across stores
StoreDiscountPriceBuy link
SteamBest price$9.99Buy Agent Sirius at Steam

All-time low: $7.99 at Steam on Apr 15, 2026 — the current best price is 25% above it.

Prices in USD, refreshed every few minutes. Switch currency on this page for EUR/GBP/BRL and more.