Finding a working Stronghold Kingdoms private server is difficult because no open-source emulator currently dominates the scene. Your best bet is to look for niche Discord communities that are hosting "classic" or "speed" rounds, but proceed with caution regarding your cybersecurity.

Stronghold Kingdoms Player Count - Steam Charts - Tracker Network

You will often need to create a separate account for the private server, as your official Firefly login credentials will not transfer. Pros and Cons of Private Hosting

Most private server activity is managed through Discord. Search for groups like SHKBot or active House channels.

Some private servers require a specific launcher version or a patched .exe to redirect the game client from Firefly's servers to the private host.

: Some players use applications like Sandboxie to run multiple instances of the game client on one PC, allowing them to manage different accounts across various official worlds simultaneously.

Private servers typically differ from the official game in specific ways to speed up gameplay:

Many veteran factions (Houses) host their own communication hubs and sometimes coordinate for specific "Era" resets to play under their own agreed-upon rules.