Etterna
Etterna (PC, 2016) has an official source code release, etternagame/etterna.
Data checked 2026-10-13 · unbaked registry
Projects
Source releaseC++ + Lua647 starspushed 2026-10-06MIT licenserelease v0.75.1
Advanced cross-platform rhythm game focused on keyboard play
GitHub
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 releaseReimplementation201011k2026-10-12GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.