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Games like Agent Sirius | IndieDex

Agent Sirius
Games like Agent Sirius

Find the Steam hidden gems

single-players with secrets you find without a guideor

Games like Agent Sirius

A compact ~4-hour single-player mystery RPG featuring female detective Beni Akesuzu solving puzzles and uncovering a supernatural plot to save her school.

Urban Myth Dissolution Center
A ~14-hour occult detective adventure where you solve supernatural cases with a psychic director, blending visual-novel reading and puzzle deductions.
2025-02-12
- Puzzle

Adventure

Horror

Side view

Mystery

Visual Novel

Detective Girl of the Steam City cover art

Detective Girl of the Steam City

Play as private investigator Sophie in a steampunk London solving mysteries across an atmospheric, roughly 8-hour RPG.

2019-07-18

Indie
Role-playing (RPG)
Visual Novel
Erotic

DAEMON MASQUERADE cover art

DAEMON MASQUERADE

A compact anime-style supernatural detective game where you piece together evidence on a conspiracy board to identify suspects and their demonic powers.

2024-10-22

Adventure
Third person
Indie
Side view
Mystery
Visual Novel

Coffin of Ashes cover art

Coffin of Ashes

A casual single-player adventure RPG about a schoolgirl exploring a mysterious ash-covered mansion and uncovering its underground secret over roughly 7.5 hours.

2016-12-08

Puzzle
Adventure
Horror
Indie
Role-playing (RPG)

Staffer Case: A Supernatural Mystery Adventure cover art

Staffer Case: A Supernatural Mystery Adventure

A ~20-hour supernatural mystery adventure where players arrange clues into case files and spot contradictions, pacing like a faster Ace Attorney.

2023-04-30

Adventure
Text
Mystery
Drama
Visual Novel

The Case Book of Arne cover art

The Case Book of Arne

A cozy paranormal detective adventure starring a vampire and a girl, with visual-novel storytelling and light minigames in a ~6-hour mystery.

2020-10-28

Adventure
Horror
Fantasy
Indie
Mystery

Detective Araka cover art

Detective Araka

An anime visual novel about an amnesiac boy and an exorcist investigating a village's dark secrets, with branching endings and a short ~7.5-hour runtime.

2025-10-17

Adventure
Horror
Text
Visual Novel

Ai & the Demon & the Curse of Lust cover art

Ai & the Demon & the Curse of Lust

A casual anime-style turn-based RPG about a school's Paranormal Research Club investigating the mysterious DemonComm website, with a female lead and optional mature content.

2025-10-02

Comedy
Adventure
Bird view / Isometric
Role-playing (RPG)

Magical Princess Lily cover art

Magical Princess Lily

A compact ~7-hour single-player turn-based RPG where Ritsu transforms into a magical girl to battle supernatural enemies and uncover a pharmaceutical conspiracy, with a dark, conflicted tone.

2025-11-07

Adventure
Bird view / Isometric
Indie
Role-playing (RPG)
Mystery

High School Dirty Secrets cover art

High School Dirty Secrets

A short psychological horror puzzle adventure about exploring a locked high school, solving puzzles, and uncovering dark secrets, with an unsettling atmosphere and anime style.

2025-11-06

Action
First person
Puzzle
Thriller
Adventure
Horror

The logic of the miniature garden cover art

The logic of the miniature garden

A story-heavy visual novel adventure about observing darkness in a mysterious campus, with a slow, atmospheric pace and a roughly 12-hour narrative.

2019-06-18

Adventure
Indie
Role-playing (RPG)

Abyss School cover art

Abyss School

A short single-player adventure of hidden-object puzzles and zombie-dodging in a school, with a surprisingly story-rich and breezy tone.

2024-01-19

Adventure
Horror
Third person
Indie