Top similar games like Siphonopolis:

Tormentum II is a Point & Click adventure game taking place in a dark, surreal world full of gloomy characters and repulsive creatures taken straight from the scariest horrors. Tormentum II, a long-awaited continuation of the dark adventure game inspired by the works of H.R. Giger and Zdzisław Beksinski.

Dive into a surreal ocean abyss in an atmospheric puzzle-adventure. Explore dangerous waters, possess sea creatures and solve environmental puzzles to discover what lies deep below the surface…

A lovecraftian roguelike. Dive into procedurally generated undersea caves. Collect gold, upgrade your equipment, and Feed the Deep.

Lucid Dream is the story of little Lucy, who goes on an adventure into the world of dreams with the mission to save her mother.

A little boy falls asleep to a horrible nightmare. Can you make him happy again?

They Breathe is a short journey into the depths of a forest filled with water. As you swim deeper, it's up to you to figure out the rules of an insidious ecosystem where nothing is as it first seems, and where everyone is after the same precious resource – oxygen!

A mysterious signal. A missing crew. And the one man trying to piece it all together. As Abe Douglas, dive deep into a fully underwater metroidvania to explore massive oceanic biomes, battle monstrous bosses, and piece together a mystery that threatens not only your crew, but your own sanity.

Immerse yourself in a visceral experience where every bullet is a desperate attempt to reclaim the fragments of your former self. As a lost soul you must confront tormenting thoughts, traverse the yawning void of emptiness, combat the suffocating grip of apathy and lastly defeat yourself.

Welcome, child, to your new home. Here you shall learn the art of perfection. Here you shall learn to smile. Be sure that smile doesn’t fade into sadness, or you will need to run and hide…

A downloadable tragedy for Windows and macOS

A story-driven psychological thriller about the horrific consequences of a loved one's suicide.

Corpo Connections is a stylistic, narrative-driven, horror adventure game where you match anomalies and descriptions to make connections that unravel the mysterious workings of your new employer.

Magnus Imago is an atmospheric journey through a mysterious world of characters, traces and symbols. The task of the player is to solve the puzzles, using proper combinations of objects, finding them in the environment around him.

Everyone must resist the relentless unfairness with the cards they've been dealt. Use the randomly distributed holy verses to identify the names of the 10 demons. Save 5 people and exorcise the sixth threat lurking in the shadows. This is a compact game of continuous gambles and judgments.

Insane, absurd and intense avoid-'em up game about a cat!

Help Lily survive the paranormal and rescue a friend, on her strange journey through a series of parallel universes, in this special blend of precision and puzzle platforming. Avoid horrifying enemies, collect magical glyphs, and discover the connection between Lily and the parallel universes.

Necromancer is a fast-paced shooter set in an eldritch arena, where you will face an onslaught of horrors. Utilise Necromancy, powerups and weapons to annihilate your foes and survive as long as possible.

Children of Silentown is a dark adventure game that tells the story of Lucy, a girl growing up in a village deep in a forest inhabited by monsters. People disappearing is nothing uncommon here, but this time, Lucy is old enough to investigate on her own. Or so she thinks.

A nightmarish 2D roguelite that will leave you questioning your sanity.

Life Gallery is a puzzle game with a unique, illustration-style art design that leads the players into a world of profound horror.

An eerie anti-rhythm hiden-object roguelike. Avoid a procedurally generated song. Look for pearls in a surreal wonderland. Experience hyperacusis from the comfort of your seat.

Immerse yourself in an adaptation of an old story about Ewan Berrington.

Unburied and forgotten undead gather in the city center, while the citizens of Greenberg go about their day-to-day lives.

Fran Bow is a creepy adventure game that tells the story of Fran, a young girl struggling with a mental disorder and an unfair destiny.

It's a winter night. You are coming home by train. You have to change trains at a small train station in the middle of the forest.It's not the first time you've traveled this route. But now you feel like something is different.As if something was watching you.

An investigation of a secret film studio underneath the school has lead 3 students down an estranged rabbit hole. With the fixed-camera as your weapon, shine a light on the truth and save your friends.

The comfort of a child within his own home; spoilt when an unknown person starts lurking around. Use whatever you can to survive.

Where do you run to when your demons reside within you? Decarnation is a pixel art adventure/action puzzle game with a horrific story inspired by some of the most influential films and novels in the genre. Dive into a breathtaking thriller where nightmares and dreams intertwine…

Burn Depth is an tense, underwater, horror exploration game. Find a path through a dangerous and unexplored area of the ocean filled with menacing creatures. Manage your vessel's resources, survive the dive, and uncover the mysteries beneath the sea floor.

A story about a woman who lives alone near the forest.

Yeli Orog is a short atmospheric FMV game about an immense archaeological discovery: A bizarre stone tablet written in the Celtiberian language found buried underneath an ancient dolmen in northern Spain.

You have found yourself within this god forsaken prison. The people around you don't seem human... They don't look good or trustworthy... But you share the same goal, freedom.

A short horror game where you pilot a tiny submarine through an ocean of blood on an alien moon.

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Vasilis is a hand-drawn adventure game. The main character – Vasilis, lost her husband – Peter, in the rebellious city center. The city is in riots for a long time and almost everyday something burns or someone dies.

Pilot an oil-drilling submarine for a mysterious corporation. You better meet your quota or they will cut your oxygen. Be careful, your machinery may attract the attention of something lurking below.