A downloadable game for Windows, macOS, and Linux

Buy Now$9.99 USD or more

Heliophobia is a first-person horror/mystery adventure presented through a surreal, non-linear narrative. You awake on a vacant plane, given only a singular task: kill the one with the initials "J.R.".

Your memories seem to be just beyond reach. Grotesque humanoid creatures pursue you at every turn. Crime syndicates and shadowy organizations plot behind closed doors. On top of it all, your mind keeps slipping in to unexplainable waking nightmares. With only your rapidly fading senses about you, what will you discover - before it's too late?

Sneak, hide, and run from a slew of horrific monsters across a vast nocturnal metropolis. Explore a wide variety of locations while you uncover secrets and piece together fragments of a deep, interwoven story. Navigate sections of a seemingly endless city filled with claustrophobic alleyways, labyrinthine tunnels, and dreary establishments. Segments of nerve-wracking terror are broken up by exploration, puzzle-solving, and world-building sections - providing brief respite from high-anxiety encounters.


  • Surreal Horror - Monsters and nefarious humans are not the only things to fear. The entire world feels just a few degrees off from "normal".
  • Non-Linear Mystery - Segments of the story branch off and unlock in non-chronological order. Any completed section can be returned to for further investigation.
  • Glitch Senses - Heavy glitch effects serve as both visual flair and a "sixth sense" for nearby dangers. Use them to your advantage, or disable the effects entirely.
  • Survive On Your Terms - Despite the claustrophobic setting, many levels feature multiple routes or varied solutions to puzzles.
  • No Cheap Jump Scares - Building atmosphere and dread are central to the overall experience. While some moments may be surprising, none are played just for an empty reaction.
  • Outside The Comfort Zone - Each challenge is presented with a new setting, format, or set of rules. No two sections should feel exactly the same, leading to a feeling of gnawing unease.

Developed by Entropy Phi. For more of my work, check out the links below.
Twitter | Patreon | Itch.io

Glass Knuckle Games
PlatformsWindows, macOS, Linux
Release date Oct 18, 2018
Rated 4.5 out of 5 stars
(4 total ratings)
AuthorEntropy Phi
GenreAdventure, Puzzle
Made withUnity
TagsFemale Protagonist, First-Person, Horror, Mystery, Psychological Horror, Surreal, Thriller, Voice Acting
Average sessionAbout a half-hour
InputsKeyboard, Mouse, Xbox controller, Gamepad (any), Playstation controller
AccessibilityColor-blind friendly, Subtitles, Configurable controls, Interactive tutorial


Buy Now$9.99 USD or more

In order to download this game you must purchase it at or above the minimum price of $9.99 USD. You will get access to the following files:

heliophobia-windows.zip 1 GB
Version 1.1.2
heliophobia-windows64.zip 1 GB
Version 1.1.2
heliophobia-osx.zip 1 GB
Version 1.1.2
heliophobia-osx64.zip 1 GB
Version 1.1.2
heliophobia-linux.zip 1 GB
Version 1.1.2
heliophobia-linux64.zip 1 GB
Version 1.1.2

Development log


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Do you plan to make a Heliophobia 2?


You are amazing. This may have to be the first title I try from you because it showcases the immersion of your design work.

It's my most recent release (for now) so it's definitely the most advanced of all my projects. Totally different genres between all of them, but I think they're getting a bit more refined over the years.


So far so good. Thanks for publishing your work.


And here's part 2!

Thanks for checking it out!

(1 edit) (+1)

I really liked this game to be honest.  It was different and challenging and had a really cool surreal vibe to it.