Last week Nexuiz 2.5 was released and we said it raised the
bar for open-source gaming as it already offered impressive graphics and
this new release was greeted by various engine improvements, new models,
and over 3,000 other changes. Well, Nexuiz is not the only open-source
first person shooter striving for perfection even without the backing of
a major game studio. A relatively unheard of game engine is XreaL, which
has not had a stable release yet but its lead developer claims that it
is definitely the most advanced open-source game engine.