MMO Server Developments

MMO Server development and reverse engineering: packet structures, source modifications, custom content and emulator internals.

This is the section for changing how MMO Server works rather than running it as shipped: reading and rebuilding the protocol, adding items, maps and systems, writing tooling around the file formats, and the work of building an emulator where no server files exist.

Common questions

How do I start writing a MMO Server emulator?

By understanding the protocol. Capture the traffic between a client and a real server, work out the packet structure and any encryption, then answer the client's login sequence from your own listener. The threads here document that work for MMO Server.

Can I add custom content to MMO Server?

Yes, and how far depends on whether you have source. With source you can change server behaviour directly. With binaries only you are limited to the database, the config and the client files - still enough for custom items, rates and maps on most builds.

Where is the MMO Server source code?

Where a source release exists it is posted in the MMO Server releases section. Where it does not, the work in this section is reverse engineering it from the client and from captured traffic.