Hello everyone,

Since me and my Friends like to play lengthy rounds with lots of base building we were always bothered by Cossacks3 constant desyncs, crashes and disconnects. Furthermore we like to play across multiple days.

Unfortunately the devs never released support for saving and loading games in Cossacks 3 like it existed in other Cossacks titles, even though they announced it about 10 years ago. This made playing the newer title quite frustrating considering the aforementioned Issues.

So in 2026 with Powerfull AI I decided to give implementing the feature a try and was successful. I bring to you:

C3Resume

A mod that adds saving and loading multiplayer matches to Cossacks 3 on a custom server.

It supports Windows and Linux, comes with easy to use installers and has useful features like autosave. It has been very solid in our testing even with large save files.

Full disclosure: This mod was primarily written by AI. While I do know how to code, This would probably have take me Months to figure out and I dont have that time. Im aware of the controversies surrounding AI slop and while this is AI, it is not slop. It fufills a specific purpose and does just that. It has undergone lots of testing with me and my friends and has been rock solid in the latest version.