Growing up, we always had Macs, so when my grandma got an old Windows box from a surplus auction, I went to OfficeDepot and bought Anno 1602, a game no one I knew had ever heard of, for $9.<p>Actually it was a pretty awesome game, despite having different controls from every other RTS; the focus was more on trade than military which was pretty cool. They ended up making a few higher budget sequels as well: <a href="https://en.wikipedia.org/wiki/Anno_(series)" rel="nofollow">https://en.wikipedia.org/wiki/Anno_(series)</a><p>Unknown Horizons is basically a clone of the original Anno 1602, and I've been sort of following the development for 6 or 7 years, always thinking "that would be the perfect open source project for me to contribute to" but sadly I haven't really spent much time playing it and haven't written any code for it.