Duelyst

Duelyst (PC, 2016) has an official source code release, open-duelyst/duelyst.

Data checked 2026-10-12 · unbaked registry

Projects

Source releaseJavaScript/CoffeeScript (Node.js)3,925 starspushed 2025-08-01CC0-1.0 licenserelease 1.97.13

Duelyst is a digital collectible card game and turn-based strategy hybrid, developed by Counterplay Games.

Wikipedia: open engine AND open game data; source released 2023 by/for Counterplay Games. Counterplay released code (MIT/CC0) Jan 2023. Almost three years later after the servers were shut down, Counterplay Games released the entire game (…

What you need

Free game data is included with at least one project.

More on PC

GameMethodYearStarsLast push

PCMindustrySource releaseAgent environment201929k2026-10-11 PCosu!Source releaseReadable bytecode+1200719k2026-10-12 PCCommand & Conquer Remastered CollectionSource release202021k2025-01-16 PCRollerCoaster Tycoon 2ReimplementationAgent environment200216k2026-10-12 PCDune 2000Reimplementation199818k2026-10-11 PCAge of Empires IIReimplementation199914k2026-10-03 PCCataclysm: Dark Days AheadSource release201313k2026-10-12 PCCivilization VSource releaseReimplementation201011k2026-10-12

Found via en.wikipedia.org/wiki/List_of_commercial_video_g, pcgamer.com/duelyst-to-shut-down-servers-forever, pcgamer.com/duelyst-source-code-is-now-free-for-

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.