Indiana Jones and the Infernal Machine (OpenJones3D)

WIN

OpenJones3D: a recreation of LucasArts’s Jones3D engine, which powers Indiana Jones and the Infernal Machine (1999), reconstructed function by function in C from the game’s executable, its debug symbols and strings, and what is known about related engines, such as Sith (Jedi Knight’s), Grim Fandango’s, and projects like OpenJKDF2. It advances in phases: first a shell of functions that call those of the original executable (Indy3D.exe), then it replaces them one by one with its own code through hooks and, at the end, the global variables too. Version 0.3.0 (April 30, 2025) left the engine, according to the project, 87% complete, and added QHD and 4K resolutions, HD fonts, fade plate models for 21:9, developer console commands, parsing and compiling of COG scripts, and up to 128 simultaneous sounds. Version 0.3.1 (July 8, 2025) fixes several bugs, such as the radius of the fade plates, but attaches no files: the latest download is 0.3.0. The README states that the project includes no game assets.

You needYour own copy of the game (for example, from Steam or GOG) and, in addition, version 1.0 of Indy3D.exe from the CD edition, whose SHA-256 the README gives. OpenJones3D’s files are unzipped into the installation’s Resource folder, next to Indy3D.exe, and you launch Jones3D.exe. Windows.

How it gets to PC

Port of a decompilation

Console

Microsoft Windows

Original studio

LucasArts

Year

1999

Author

smlu

Stars

74

Last activity

2026-11-08 · 3 days ago

Latest version

v0.3.0 · 2025-04-30

Language

C

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