Natural Selection
1 project: source release.
Projects
Source releaseC++ (HL SDK)277 starspushed 2014-01-22custom license
Natural Selection mod for Half-life
Wikipedia: open-source code, proprietary assets; source released 2014 by/for Unknown Worlds Entertainment. In January 2014 Unknown Worlds released the source code for download on GitHub.
What you need
You need your own copy of the game: these projects ship code only.
More on PC
GameMethodYearStarsLast push
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, polygon.com/2014/1/23/5337220/natural-selection-
GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.