Case study

OpenLRR: incrementally rebuilding LEGO Rock Raiders

OpenLRR incrementally rebuilds the PC game LEGO Rock Raiders by implementing and replacing game and engine functions. Unreplaced behavior continues to use the user’s original executable and game assets. Its MakeExe tool adds an import for openlrr.dll and redirects the original entry point to the replacement code.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 88
Last commit: 2023-10-06
Language: C++

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a download method observed; no demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: A working LEGO Rock Raiders installation is required.
Prerequisites: Visual Studio 2019 is required to build.
Limits: Function names and structures are still undergoing refactoring.
License: No licence file in the repository.

Cite

BibTeX

@misc{openlrr-rock-raiders-case,
  title = {{OpenLRR: incrementally rebuilding LEGO Rock Raiders}},
  howpublished = {\url{https://github.com/trigger-segfault/OpenLRR}},
  url = {https://github.com/trigger-segfault/OpenLRR},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/openlrr-rock-raiders-case/}}
}

Plain text

OpenLRR: incrementally rebuilding LEGO Rock Raiders. https://github.com/trigger-segfault/OpenLRR (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/openlrr-rock-raiders-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · trigger-segfault/OpenLRR · Revision 2f6743c
src/openlrr-makeexe/README.md GitHub · trigger-segfault/OpenLRR · Revision 2f6743c