To play at our server you need special client. Download from Github:
https://github.com/igroglaz/a2/archive/main.zip
After downloading, extract it to any location and run allods2.exe as administrator (right click at allods2.exe -> "Run as administrator").
Attention! The entire singleplayer campaign was cut from our client. If you want to go through the plot of the game – buy the game from GOG.