RAthena
lastmod 2026-11-10created 2021-05-192 edits
rAthena is an emulator project that provides an open-source implementation of the server for the online game Ragnarok Online. It forked from eAthena and consists of login, character, and map servers written in C++, a MySQL database, and NPCs and quests written in its own scripting language. It is used for running private servers and for learning game server architecture, and its packet and item databases are steadily updated to keep up with official client updates.