Crystal Mines
Crystal Mines (NES, 1989) has an open-source reimplementation, Evenball-8bit/CrystalMines, and 2 other public projects, including an official source code release.
Data checked 2026-10-13 · unbaked registry
Projects
Crystal Mines ported to CA65 and 8bitWorkshop by Evenball
development halted; status playable
Wikipedia: source-available (non-OSI), freeware data; source released 2011 by/for Ken Beckett / Color Dreams. In August 2011 Ken Beckett, the programmer of the NES game Crystal Mines, released the source code under a custom permissive lice…
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What you need
Free game data is included with at least one project.
More on NES
Found via osgameclones.com/, en.wikipedia.org/wiki/List_of_commercial_video_g, pdroms.de/nintendoentertainmentsystem/crystal-mi, forums.nesdev.com/viewtopic.php?t=8057
GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.