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The Sirena Expedition

The Sirena Expedition

The Sirena Expedition is a short PSX-style horror-platformer in which you explore a mysterious underwater facility.

Released Oct 26, 2023 Developer Giraffe Cat Platforms Windows HorrorPlatformerUnderwaterAtmosphericSupernatural
View on Steam ↗ $5.99 (US · as of 2026-05-13)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-28.

82.7%positive139 reviews
Recommended · 1 found this helpful

“Megalohydrothalassophobia, with Pandemonium (for PSX)-style jumping puzzles. Short but accomplished -- nice voice acting, animations, floatiness of the jump, music, the lot. A nice short fix for underwater dread aficionados.”

— a player, Steam review · 1 hrs played
Recommended · 1 found this helpful

“This is a cute cozy-type horror game that's not really very challenging but gets a lot better on the second alternate run. You're just walking through an underwater facility and solving very basic puzzles that involve switching your body with a crate to move around. There's no…”

— a player, Steam review · 6 hrs played
Recommended · 1 found this helpful

“fun, quirky secrets, neat voices and music, pretty simple gameplay and puzzles”

— a player, Steam review · 3 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-28.

12achievements
21.1%median completion
11.9%rarest: Why Did I Turn Around?
77.0% of players 73.1% of players 63.7% of players 54.6% of players 53.8% of players 38.0% of players 21.1% of players 20.1% of players 17.2% of players 15.5% of players 13.6% of players 11.9% of players 77.0% 0% most earned rarest
Almost everyone has
77.0%I Opened My Eyes — Make your way to the Abyss.
73.1%Everything Has its Own Frequency — Acquire a new ability.
63.7%Purposely Designed, To Test Me — Make your way to the top of the facility.
Rarest badges of honor
11.9%Why Did I Turn Around? — Hidden achievement
13.6%Back to Start Everything Off — Hidden achievement
15.5%How Could I Leave it All Behind? — Leave the facility without discovering its purpose.

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Aug 08, 2024
The Sirena Expedition is coming to Nintendo Switch!

Hello, I'm excited to announce that The Sirena Expedition is coming to Nintendo Switch on the 16th of August 2024! The port has been handled by Ant Workshop (makers of Dungeon Golf and the upcoming In

Jun 25, 2024
The Sirena Expedition v1.12 is now live!

Hello there! It's been a while, but I've got an update which includes some bug fixes, and also a bit of news. First, the patch notes: Fixed a bug where you could pull a block backwards into a wall, an

Apr 15, 2024
The Sirena Expedition Soundtrack: Now available!

Well, it took a little longer than I was hoping, but The Sirena Expedition's soundtrack is now available on Steam! If you enjoyed the game, please consider picking up the soundtrack, as it really help

Mar 13, 2024
The Sirena Expedition v1.11 is now live!

Okay, so I know I said the game was finished, but I received a report for a progression-stopping bug, so I spent a couple of days fixing that. Here are the details: Fixed a number of issues with ultra

Feb 19, 2024
The Sirena Expedition v1.10 is now live!

Well, here it is! Finally, I've updated the game with all of the last pieces of music. There's about 15 minutes of new music, on top of the ~24 minutes that was there already, so I'm quite happy to ha

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Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-09-28.

GenresAdventure, Indie
Player tagsHorror · Platformer · Underwater · Atmospheric · Supernatural · 2D Platformer · Retro · Linear · Adventure · Female Protagonist · Narration · Lovecraftian (SteamSpy community voting)
FeaturesSingle-player · Gamepad Recommended · Partial Controller Support · Family Sharing
LanguagesEnglish * *
Achievements12
Official sitehttps://www.sirenaexpedition.com/
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS *: Windows 7 Processor: i5 2300 or AMD FX-6120 Memory: 4 GB RAM Graphics: NVIDIA GeForce GTX 550 Ti or AMD Radeon HD 6770 DirectX: Version 11 Storage: 300 MB available space