Case study

libd2: Diablo II 1.14d engine-core libraries

Zig libraries reconstructing Diablo II 1.14d seeded maps, item generation, saves, simulation rules and network formats. Selected components expose native and WebAssembly interfaces; verification notes distinguish retail map comparisons from weaker subsystem evidence.

Targets: Binary · Game · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-10-19

Requirements & limits

Builds require Zig 0.16.0. These are modular engine libraries, not a complete playable client; basic generation uses embedded data and fixtures.
MIT covers the Zig source. Included Blizzard-derived binary blobs and map fixtures are expressly excluded from that grant; the repository is not asset-free.
The authors report cell-level comparisons for five Nightmare seeds and two holdouts, plus per-level CRC checks for 200 seeds at three difficulties.
The game and net packages are checked against recovered rules and packet layouts, not a live server; save, item and pathfinding checks have different depth.

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The description was reviewed against primary sources.

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Primary sources

README.md GitHub · jaenster/libd2 · Revision bc21bb9
LICENSE GitHub · jaenster/libd2 · Revision bc21bb9
docs/VERIFICATION.md GitHub · jaenster/libd2 · Revision bc21bb9
docs/BUILDING.md GitHub · jaenster/libd2 · Revision bc21bb9
build.zig.zon GitHub · jaenster/libd2 · Revision bc21bb9
packages/drlg/src/oracle.zig GitHub · jaenster/libd2 · Revision bc21bb9
packages/drlg/src/verify_tests.zig GitHub · jaenster/libd2 · Revision bc21bb9

Requirements & limits

About this entry

Primary sources

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