Yume Nikki
Yume Nikki (PC, 2004) has code that decompiles almost back to source.
Data checked 2026-10-13 · unbaked registry
Projects
Yume Nikki (RPG Maker 2003)
Readable bytecodeRPG Maker 2003 (EasyRPG Player reimplementation runs it)
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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 EasyRPG/Player
GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.