Ah Settlers II Gold Edition, what a grand retro game that was. Micromanaging a village from colonizing new lands, conquering, producing goods, mining resources, watching your little villages go to work while listening to the music and the chirp of birds. It's still loved to this day and thanks to the developers behind "Return to the Roots" they've released the latest open source update add-on which has new features such as Battlefield Promotions and Improved Lua Scripting. Return to the Roots supports multiple operating systems, being playable on Windows 7, Vista & XP as well as Mac OS X and Linux
You can find latest stable releases and nightly builds at RttR download page. You need "The Settlers II Gold Edition"® to play.