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Agent Sirius official game artwork

THE PRACTICAL GUIDE

Agent Sirius Guide

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 shadow

Steam ↗Windows
GameWiki Pro EditorialReviewed 5 guide topics

GET YOUR BEARINGS

Plan your next Agent Sirius session

Our guide breaks down Agent Sirius into its core investigative, analytical, combat, narrative, and platform components, offering observations that help players navigate each aspect without relying on hidden mechanics or undocumented features.

01 / THE GUIDE

Map the Campus

Create a simple sketch of the school layout, marking where clues were found. Comparing locations can reveal patterns that might otherwise be missed during free exploration.

  • Take note of repeated visual details; they often hint at hidden clues.
  • Compare dialogue from different characters to spot contradictions.

02 / THE GUIDE

Character Motive Chart

List each suspect with their background and any discovered evidence. Seeing motives side‑by‑side helps prioritize who to confront first.

  • Organize clues by character to see patterns more clearly.
  • Re‑visit characters after new evidence appears for fresh insights.
Agent Sirius official gameplay screenshot
Publisher-provided gameplay image · Lunarian

03 / THE GUIDE

Gadget Effectiveness Log

After each unique encounter, note which gadget succeeded and why. Over time this builds a reference for matching tools to enemy behaviors.

  • Observe enemy behavior before attacking to choose the best gadget.
  • Keep gadgets in reserve for challenging encounters.

04 / THE GUIDE

Choice Impact Tracker

Write down major dialogue choices and the immediate reactions they provoke. Later, compare these notes to the story’s branching to understand cause and effect.

  • Consider long‑term relationship impact when making dialogue choices.
  • Track choices in a notebook to anticipate future branching.

05 / THE GUIDE

Steam Feature Utilization

Check the Steam Cloud status and Achievement list regularly. Observing which achievements align with in‑game actions can highlight optional content worth pursuing.

  • Enable Steam Cloud to keep your progress synced across devices.
  • Check the Achievements list for optional goals that encourage thorough exploration.

WATCH THE GAME

Agent Sirius videos

Official trailers & gameplay

INSIDE THE WORLD

Screenshots & game images

5 official screenshots

IN THIS WIKI

Your reading checklist

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QUICK ANSWERS

Agent Sirius FAQ

Can I play Agent Sirius on a Mac?

No, the game is listed only for Windows; Mac support is not documented.

Does the game have multiplayer modes?

The description specifies single‑player only, so no multiplayer modes are provided.

Are there multiple endings based on my decisions?

Yes, choices influence the story and can lead to different endings.

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SOURCES & CREDITS

Official resources and further reading

Original editorial guidance. Game imagery and trailers are provided by the publisher through Steam. Media and reference links checked 2026-10-24. Game versions, supported platforms, and balance can change; consult the linked release notes for current details.