Case study

Thirdeye: reimplementing the AESOP engine for Eye of the Beholder 3 and Dungeon Hack

Thirdeye reimplements the AESOP/16 and AESOP/32 engine in C++ to run Eye of the Beholder 3 and Dungeon Hack from their original RES files and unchanged bytecode. It includes a SOP virtual machine, resource readers and a RES disassembler, alongside a modern runtime with SDL3 audio, input and display support.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C1 partial scope or analysis entry

Stars: 29
Last commit: 2026-08-11
Language: C++
License (GitHub): GPL-3.0

GitHub data as of 2026-11-10

Copy as Markdown View JSON Cite

Evidence

Demo screenshot from the project's public documentation

Observed: Demo documented; the documentation covers part of the feature set.
Scope: Partial
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: Original copies of the games and their data are required.
Prerequisites: Building requires CMake 3.15 or newer, a C++20 compiler, SDL3, OpenAL and WildMIDI.
Limits: Version 0.90.0 is marked unreleased; some described Dungeon Hack features are in that unreleased version.
License: GPL-3.0.

Cite

BibTeX

@misc{thirdeye-aesop-engine-case,
  title = {{Thirdeye: reimplementing the AESOP engine for Eye of the Beholder 3 and Dungeon Hack}},
  howpublished = {\url{https://github.com/psi29a/thirdeye}},
  url = {https://github.com/psi29a/thirdeye},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/thirdeye-aesop-engine-case/}}
}

Plain text

Thirdeye: reimplementing the AESOP engine for Eye of the Beholder 3 and Dungeon Hack. https://github.com/psi29a/thirdeye (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/thirdeye-aesop-engine-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

README.md GitHub · psi29a/thirdeye · Revision 4ec4e6a
docs/architecture.md GitHub · psi29a/thirdeye · Revision 4ec4e6a