Games like Agent Sirius
If Agent Sirius is your kind of game, the closest matches are 少女的求生之路：研究所, Last Word and Unavowed — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.
Get personalized picks →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!
Players who liked Agent Sirius also play
Steam players who put hours into Agent Sirius also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.
少女的求生之路：研究所
WHY THIS
Top pick for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares RPG with Agent Sirius.
2D pixels+beautiful girl+high-definition CG+super rich plot+numerous endings! Put aside the boring and peaceful daily routine, and enjoy the life of sticking with beautiful girls to the fullest in a different world~
Last Word
WHY THIS
Second-strongest match for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares Adventure and RPG with Agent Sirius.
In a society where having the last word means having power over others, a small party is disrupted by a gentleman who politely issues orders via one-way intercom.
Unavowed
WHY THIS
Third-strongest match for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares Adventure and RPG with Agent Sirius.
A demon has possessed you and used your body to tear a swath of bloodshed through New York. You are now free, but life as you knew it is over. Your only path forward is joining the Unavowed - an ancient society dedicated to stopping evil. No matter what the cost.
Corpse Party (2021)
WHY THIS
Ranked #4 for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares Adventure and RPG with Agent Sirius.
Explore the haunted halls of Heavenly Host Elementary in Corpse Party (2021), the horror cult classic now updated for the next generation.
Zombie Apocalypse Survival Simulator
WHY THIS
Ranked #5 for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares Adventure and RPG with Agent Sirius.
From the creators that brought you The Test Trilogy & many other experiences, comes Zombie Apocalypse Survival Simulator. Will you survive in the new world? Or will you become just another victim to looters, bandits, or worst of all... The Voracious Dead. There's only one way to find out...
The Test: Secrets of the Soul
WHY THIS
Ranked #6 for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares Adventure and RPG with Agent Sirius.
You will answer a series of questions that will reveal things from deep within. Some will be uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and are you SURE you want the answers you seek? For it is time to unlock "Secrets of the Soul..."
Kakuriyo Village ~Moratorium of Adolescence~
WHY THIS
Ranked #7 for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares RPG with Agent Sirius.
Ao & Hinori were both childhood sweethearts & accidentally went to a strange world called Kakuriyo Village. Because of her boyish appearance, the villagers mistakenly thought Hinori was a boy... Can they successfully hide Hinori's genders and escape from the village！？
Spirit Hunter: Death Mark
WHY THIS
Ranked #8 for Agent Sirius fans by collaborative filtering across millions of Steam libraries. Shares Adventure with Agent Sirius.
A strange rumor is spreading through the shadows of Tokyo's H City: a mysterious disfigurement has been appearing on the bodies of certain individuals. Anyone who receives the Mark will rapidly die of unknown, horrifying causes. The countdown to death has already begun...
Cheaper alternatives
Games in the same vein priced at least 40% below Agent Sirius at current Steam store prices.
Vampire Survivors
WHY THIS
Priced ~50% under Agent Sirius on Steam right now. Shares RPG with Agent Sirius.
Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!
POSTAL 2
WHY THIS
Priced ~90% under Agent Sirius on Steam right now. Shares Adventure with Agent Sirius.
Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong?
Brotato
WHY THIS
Priced ~50% under Agent Sirius on Steam right now. Shares RPG with Agent Sirius.
Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.
GRIS
WHY THIS
Priced ~63% under Agent Sirius on Steam right now. Shares Adventure with Agent Sirius.
Gris is a hopeful young girl lost in her own world, dealing with a painful experience in her life. Her journey through sorrow is manifested in her dress, which grants new abilities to better navigate her faded reality.
The Test
WHY THIS
Priced ~80% under Agent Sirius on Steam right now. Shares Adventure and RPG with Agent Sirius.
You will answer a series of questions that will reveal truths from deep within. These questions may make you uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and if you do, are you sure you want the answers you seek?
LEGO® Star Wars™ - The Complete Saga
WHY THIS
Priced ~50% under Agent Sirius on Steam right now. Shares Adventure with Agent Sirius.
Kick Some Brick in I through VI! Play through all six Star Wars movies in one videogame! Adding new characters, new levels, new features and for the first time ever, the chance to build and battle your way through a fun Star Wars galaxy on your PC!
The Room
WHY THIS
Priced ~50% under Agent Sirius on Steam right now. Shares Adventure with Agent Sirius.
A mysterious invitation leads to the attic of an abandoned house. In the room is a cast-iron safe laced with strange carvings and on top, a note from your distant companion. It promises something ancient and astonishing concealed in the iron chamber - you need only find a way in.
Milk inside a bag of milk inside a bag of milk
WHY THIS
Priced ~85% under Agent Sirius on Steam right now. Shares Adventure with Agent Sirius.
A short story about what sort of challenges everyday little things can be. Help the girl buy milk, be the first not to disappoint her.
Free alternatives
Free-to-play games that recommended players of this title also tend to enjoy.
Doki Doki Literature Club!
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
The Literature Club is full of cute girls! Will you write the way into their heart? This game is not suitable for children or those who are easily disturbed.
Life is Strange - Episode 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with Agent Sirius.
Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.
The Murder of Sonic the Hedgehog
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!
Indigo Park: Chapter 1
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Adventure with Agent Sirius.
Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.
The Looker
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.
Our Life: Beginnings & Always
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
A twenty-dollar bill, four summers, fifteen years, and a one of a kind life. Create an experience that’s all your own in this near-fully customizable visual novel where you grow from childhood to adulthood with the lonely boy next door.
missed messages.
WHY THIS
Free-to-play pick from the same recommendation pool — no purchase to try it.
‘goth gf’s iPhone’ airdrops you - accept or decline? A love/horror story about life, death, & memes.
Narrow it down
Head-to-head comparisons
Plays great on Steam Deck
Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.
Unavowed
WHY THIS
Deck Verified — runs on Steam Deck out of the box. Shares Adventure and RPG with Agent Sirius.
A demon has possessed you and used your body to tear a swath of bloodshed through New York. You are now free, but life as you knew it is over. Your only path forward is joining the Unavowed - an ancient society dedicated to stopping evil. No matter what the cost.
Corpse Party (2021)
WHY THIS
Deck Verified — runs on Steam Deck out of the box. Shares Adventure and RPG with Agent Sirius.
Explore the haunted halls of Heavenly Host Elementary in Corpse Party (2021), the horror cult classic now updated for the next generation.
The Test: Secrets of the Soul
WHY THIS
Deck Verified — runs on Steam Deck out of the box. Shares Adventure and RPG with Agent Sirius.
You will answer a series of questions that will reveal things from deep within. Some will be uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and are you SURE you want the answers you seek? For it is time to unlock "Secrets of the Soul..."
Spirit Hunter: Death Mark
WHY THIS
Deck Verified — runs on Steam Deck out of the box. Shares Adventure with Agent Sirius.
A strange rumor is spreading through the shadows of Tokyo's H City: a mysterious disfigurement has been appearing on the bodies of certain individuals. Anyone who receives the Mark will rapidly die of unknown, horrifying causes. The countdown to death has already begun...
Frequently asked about Agent Sirius
- Is Agent Sirius verified for Steam Deck?
- Yes — Agent Sirius is Steam Deck Verified, meaning Valve has confirmed it runs well on the Deck with full controller, text legibility, and default configuration support.
- How much does Agent Sirius cost?
- Agent Sirius is listed on Steam at 9.99 USD (current store price; Steam sales may reduce this temporarily).
- What games are most similar to Agent Sirius?
- Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Agent Sirius are 少女的求生之路：研究所, Last Word, Unavowed.
- Who developed Agent Sirius?
- Agent Sirius was developed by Lunarian and published by Saikey Studios.
imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Agent Sirius.
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