FreeCol

A free Colonization clone. If you like freeCiv you like this. A nice turn based game. Its a addictive and I am hooked on it.

For debian/ubuntu users you can get it from:
www.getdeb.net/app.php?name=FreeCol
On ubuntu the deb package handler will install java if you don't have it already. So keep in mind you might have to keep the internet connection alive to install a few extra things if need be.
FreeCol website: www.freecol.org