Shadowgrounds
Shadowgrounds (PC, 2005) has a partial official source release, vayerx/shadowgrounds.
Data checked 2026-10-12 · unbaked registry
Projects
Source releaseC++52 starspushed 2024-09-08custom license
Shadowgrounds and Shadowgrounds Survivor games
Wikipedia: source-available (non-OSI license and/or partial SDK code); source released 2011 by/for Frozenbyte. Game source released with a Humble Indie Bundle by Frozenbyte on April 22, 2011.
What you need
You need your own copy of the game: these projects ship code only.
More on PC
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PCMindustrySource releaseAgent environment201929k2026-10-11PCosu!Source releaseReadable bytecode+1200719k2026-10-12PCCommand & Conquer Remastered CollectionSource release202021k2025-01-16PCRollerCoaster Tycoon 2ReimplementationAgent environment200216k2026-10-12PCDune 2000Reimplementation199818k2026-10-11PCAge of Empires IIReimplementation199914k2026-10-03PCCataclysm: Dark Days AheadSource release201313k2026-10-12PCCivilization VSource releaseReimplementation201011k2026-10-12Found via en.wikipedia.org/wiki/List_of_commercial_video_g, phoronix.com/scan.php?page=news_item&px=OTM2NA
GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.