This was one of my favorite Jam entries!
I can confirm that the Linux distribution does, indeed, work.
I'm always glad to see a horror game take place underwater, since I think it's a drastically underutilized horror setting. It's actively hostile to human life, it slows down movement and dampens the soundscape, it allows for either claustrophobic 3D mazes or bottomless voids where anything could be lurking, and it's home to so many horrific creatures. I think that anyone growing up playing Ecco the Dolphin or Sonic the Hedgehog as I did will have a deep-seated fear of the open ocean and drowning in video games.
I thought that this game was very well done. In particular I like the touch of adding particles floating in the water, which not only helps to sell the underwater setting, but also gives the player plenty of things to see out of the corner of their eye.
This is perhaps the most professional entry I've played. Making a fully voice acted game on such short notice is very impressive, let alone one that is well voice acted four times over!
Speaking as someone with a very low tolerance for anime, I found the opening of this game to be extremely anxiety-inducing, which helps to build an atmosphere of horror.
I like the PS1 look of this game. The low-poly models, low-res textures, and limited draw distance do a good job of giving everything an unnerving look. I also think that the game is well-structured from a horror perspective. All of the important mechanics are presented to the player in a safe setting before the danger is introduced, which really helps to build tension.
This is easily my favorite entry that I've played so far! It is quite visually striking and has an engaging story.
I think that doing a mystery game for a horror competition was a smart choice. It's easy for horror games to fall into the trap of having to invent blatantly artificial reasons for the player to explore unnerving places, but tying the exploration to the story can make the player want to actively explore out of their own curiosity.