"How are GNU/Linux users preparing for Linus Torvalds' plan of
world domination? By playing free software computer games based on
the classic world conquest board game Risk. You can perfect your
strategy by playing the games XFrisk, TEG, or Ksirk.
"XFrisk uses the X toolkit (Xt), which was popular 15 years ago.
XFrisk itself isn't that old, but it shows the maturity of a
classic X application, and most major GNU/Linux distributions
include it in their default repositories. You can also download
source code from XFrisk's download page..."