Knight Online
Knight Online (PC, 2004) has an open-source reimplementation, Open-KO/KnightOnline, and 1 other public project.
Data checked 2026-10-13 · unbaked registry
Projects
OpenKO is an open source version of the old school Knight Online MMORPG. Specifically designed for version 1.298.
development very active; status semi-playable; OpenKO is an open source version of the old school Knight Online MMORPG
A from-scratch reimplementation of the Knight Online game server and client
A from-scratch reimplementation of the Knight Online game server and client; no GitHub releases; repo created 2026-09-03
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What you need
You need your own copy of the game: these projects ship code only.
More on PC
Found via osgameclones.com/
GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.