The Sirena Expedition

The Sirena Expedition

Giraffe Cat · 2023 · Horror, Platformer, Underwater, Atmospheric, Supernatural

PC
Very Positive82% · 129
Best price
$5.99
lowest tracked $1.19
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Standard Edition · Steam
$5.99
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About The Sirena Expedition

✦ AI summary

Descend into a mysterious abandoned facility hidden in the Mariana Trench and uncover its dark secrets through exploration, puzzles, and tense encounters in this 1-hour atmospheric horror platformer. Its PlayStation1-inspired visuals, innovative puzzle design, and fully voiced narrative create an unforgettable journey to the ocean's deepest mysteries.

"I remember getting the call vividly. I was trying to finish up for the day, but a stack of paperwork was keeping me late. To be honest, I was also looking for reasons not to go home. My phone rang, I answered it, and the director of the institute was talking, albeit disjointedly, about something that had turned up in a recent survey of The Sirena Deep."
Explore a mysterious, abandoned underwater facility at the bottom of the Mariana trench. Who built it? What was it used for? Perhaps you will find answers, or perhaps the answers will find you.
You can play through The Sirena Expedition in about an hour. However, there may be some hidden content, for those willing to look for it.
  • A 2.5D platformer with PlayStation1-inspired visuals.
  • Tense underwater atmosphere and horror.
  • Innovative puzzle mechanics.
  • Fully voiced dialogue.
  • Original soundtrack by beee girlll & Giraffe Cat.

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Jul 11, 2026
For 6 dollars you get a very interesting, but short, PSX style puzzle platformer. There is basically 0 horror in it though which is unfortunate. Voice acting was really good, same with the music!
1 found this helpful
Recommended Jun 26, 2026
The Sirena Expedition is a short narrative game with puzzle platformer elements with a Lovecraftian backdrop. I'd say for the small price I paid for it, it's a nice little game that I enjoyed. It even comes with a remixed campaign with harder puzzles and a tweaked story. It's a neat hidden gem that I'd recommend for people interesting in something more focused on atmosphere and narrative. There were only issue I encountered during my entire gameplay. One came from signposting on certain box puzzles later in the game where (after I had correctly solved it and got a box needed for the larger puzzle) I was unsure if I needed to get more or not. This led to me wasting some time trying to solve a puzzle that I had already completed.
1 found this helpful
Recommended Jun 8, 2026
despite the tags, i wouldn't really call this a horror game--it's more like a puzzle platformer with extremely light horror elements. the experience is really about the atmosphere, which it very much achieves thanks to some excellent voice acting and visuals. the narrative tries its best to provide a sense of mystery, but it gets very convoluted very quickly, and eventually takes a backseat to what was clearly the game's main focus--the puzzles. the puzzles are the best and worst part of this game. the main gimmick is really interesting, and the puzzle sections themselves are well-designed, but they're unfortunately hampered by the physics that come with the setting. everything feels painfully slow, and any satisfaction that might come with solving a section is immediately snuffed out by the realization that you now have to transport your newly-obtained box to the other side of the level at the speed of a dying snail. the grand majority of the game is spent doing this, and it wears out its welcome disappointingly quickly. still, it's impressive how immersive an experience the devs were able to craft, especially within the constraints of its graphical style. if you have the patien…
1 found this helpful
Recommended May 26, 2026
Neat worldbuilding and secrets. Not for the impatient
1 found this helpful
Recommended May 23, 2026
A small but neat game. I love the map and the athmosphere. The voice acting is nice, too.
1 found this helpful
Recommended Jul 18, 2026
fun, quirky secrets, neat voices and music, pretty simple gameplay and puzzles

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