AMNESIA '98 is an audio-visual mod that makes Amnesia: The Dark Descent look and sound like a PS1 game, by way of shader rewrites and map edits, as well as completely remade music and down-sampled sound effects.

Originally this was just something I was messing around with to see if I could create PS1-style rendering entirely with shaders, but I liked the results so much that I figured I'd polish it up and release it in time for Halloween (which didn't work out, but it's the thought that counts). Even managed to rope a friend into redoing all the music for me, which I hadn't initially planned on doing at all, but it makes for a much more complete package.

Currently this only supports the base game. Justine support will only take a bit of work, so that's probably coming soon. Custom stories, however, will require a stripped-down version of the mod, as certain effects require map edits to work correctly (namely vertex rounding and UV warping, which require planes to be subdivided into smaller sections), so those effects need to be lessened or stripped out to work with all custom stories.


PSX Graphics Features:

  • Vertex wobble and texture warping.
  • 15-bit textures and lighting, with Bayer dithering.
  • 1/4 resolution downscaling.
    • This isn't exactly optimal, but was done for simplicity and convenience. Downscaling after rendering ensures that the image is always sharp and has pixel-perfect scaling, and functions correctly regardless of display resolution or aspect ratio.
  • Short draw distances with fog and overly-aggressive culling.
  • Normal maps? Specularity? Mipmaps? Never heard of 'em.
  • Greatly reduced decals and particle systems.
  • Absurdly low FOV.
  • Simplified special effects.
  • Lots of other small things.

PSX Audio Features:

  • All music completely remade using period-appropriate synths and authentic 90s cheese.
  • Sound effects resampled at lower rates.

Installation is a bit involved, but follow the README and you should be fine.

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AMNESIA '98 Patch 1.1

AMNESIA '98 Patch 1.1

Patch 3 comments

Fixes maps in initial release being older, outdated versions due to a level editor saving bug. This manifested as wiggly/stretchy floors in some areas...

AMNESIA '98 v1.0

AMNESIA '98 v1.0

Full Version

Initial release of AMNESIA '98. Support for Justine and custom stories to come in later/separate versions.

Comments  (0 - 10 of 38)
Zoofyooo
Zoofyooo

I disabled floor warping but the floor on custom stories continues to act really weirdly... it's like shaking violently when I move

Edit: Deleting

float fVertPrecision = 128.0 / (abs(gl_Position.z) + 0.1);
@ifdef DeferredLight || UseBoxFogNormalizedRayDir
else
gl_Position.xy = floor(gl_Position.xy * fVertPrecision + 0.5) / fVertPrecision;
endif

In deferred_base_vtx.glsl fixed the problem, but... It also removed part of the aesthetic... :/

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SkyOnModDB
SkyOnModDB

The door leading to Daniel's note in Old Archives does not open

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Guest
Guest

I had the same problem! Here's how to fix: Go to maps folders, each chapter, and delete the cache files. Very easy, though I didn't think to do this for a couple hours, despite my experience with this game!

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Guest
Guest

This also fixes the warped floor bug if it's still present even after disabling cache loading.

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SkyOnModDB
SkyOnModDB

Nearly a year later and I'm finally thanking you

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jacko.-
jacko.-

nice mod

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Macgyverthehero
Macgyverthehero

So far I'm really enjoying the new aesthetic for the game. The soundtrack is neat too. Awesome mod!

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Darkfires
Darkfires

Now this is something trully original. Nice job!

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