Ten years later, there's a new version of The Trapdoor!
This new version (3.1, "Reopened") is specially rebuilt for ATDD version 1.5, and may not be as you remember.
Original key features:
- Custom sanity system
- Over 250 lines of voice acted dialogue
- Two large, complex maps to get lost in
- Difficulty settings
New and redesigned for "Reopened":
- Sanity system tweaked and rebalanced
- Both old endings reworked, plus one brand new ending
- Twelve custom monsters: Grunts and Brutes re-imagined in claymation-like style
- Adaptive custom music track
- Expanded and re-balanced difficulty options, from Safe Mode to Nightmare mode
- Environments, lighting and atmospherics improved throughout
The easiest way to get and play this new version is on Steam Workshop... but if you wanted to read that you wouldn't be here! :P So, there's a version here on ModDB, but you need to make sure you have Amnessia: The Dark Descent version 1.5, or it will not work. If you're ready, you can grab it here.