<s>
Earth	B-Application
2160	I-Application
is	O
a	O
real-time	O
strategy	O
video	O
game	O
,	O
developed	O
by	O
Reality	O
Pump	O
Studios	O
.	O
</s>
<s>
A	O
third	O
entry	O
in	O
the	O
Earth	O
series	O
,	O
it	O
is	O
a	O
direct	O
sequel	O
to	O
Earth	B-Application
2150	I-Application
.	O
</s>
<s>
It	O
was	O
also	O
released	O
on	O
Valve	O
's	O
Steam	B-Application
platform	I-Application
in	O
April	O
2006	O
,	O
and	O
later	O
from	O
Good	O
Old	O
Games	O
in	O
2009	O
.	O
</s>
<s>
In	O
Earth	B-Application
2150	I-Application
,	O
the	O
three	O
factions	O
of	O
the	O
United	O
Civilised	O
States	O
(	O
UCS	O
)	O
,	O
the	O
Eurasian	O
Dynasty	O
(	O
ED	O
)	O
and	O
the	O
Lunar	O
Corporation	O
(	O
LC	O
)	O
raced	O
to	O
build	O
starships	O
and	O
evacuate	O
the	O
Earth	O
before	O
it	O
became	O
uninhabitable	O
.	O
</s>
<s>
In	O
Earth	B-Application
2160	I-Application
,	O
the	O
player	O
initially	O
takes	O
the	O
perspective	O
of	O
Major	O
Michael	O
Falkner	O
of	O
the	O
ED	O
forces	O
.	O
</s>
<s>
Ariah	O
frees	O
Falkner	O
from	O
imprisonment	O
,	O
and	O
they	O
discover	O
the	O
lost	O
UCS	O
colony	O
ship	O
the	O
Phoenix	O
and	O
ally	O
with	O
its	O
artificial	B-Application
intelligence	I-Application
.	I-Application
</s>
<s>
Falkner	O
turns	O
his	O
Morphidian	O
units	O
against	O
Van	O
Troff	O
,	O
and	O
with	O
the	O
assistance	O
of	O
Ariah	O
and	O
the	O
Phoenix	O
's	O
AI	B-Application
kills	O
him	O
and	O
ends	O
the	O
threat	O
to	O
humanity	O
.	O
</s>
<s>
Research	O
plays	O
a	O
major	O
part	O
in	O
Earth	B-Application
2160	I-Application
,	O
and	O
factions	O
can	O
choose	O
numerous	O
technologies	O
to	O
research	O
,	O
often	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
Earth	B-Application
2160	I-Application
uses	O
modular	O
construction	O
,	O
in	O
which	O
buildings	O
and	O
units	O
can	O
be	O
constructed	O
from	O
a	O
wide	O
assortment	O
of	O
basic	O
parts	O
.	O
</s>
<s>
In	O
addition	O
,	O
ZuxxeZ	O
considered	O
the	O
multiplayer	O
feature	O
of	O
Earth	B-Application
2160	I-Application
unimportant	O
,	O
as	O
only	O
10%	O
of	O
all	O
users	O
of	O
the	O
game	O
ever	O
went	O
online	O
with	O
it	O
.	O
</s>
<s>
Earth-4	O
is	O
the	O
graphics	O
engine	O
used	O
in	O
Earth	B-Application
2160	I-Application
.	O
</s>
<s>
It	O
is	O
a	O
3D	O
engine	O
developed	O
to	O
make	O
a	O
highly	O
detailed	O
environment	O
and	O
AI	B-Application
.	O
</s>
<s>
The	O
game	O
uses	O
the	O
Earth-4	B-Application
engine	I-Application
,	O
which	O
uses	O
a	O
T&L	O
rendering	O
module	O
supporting	O
pixel	O
shading	O
and	O
bone	O
calculation	O
direct	O
to	O
ones	O
graphics	O
card	O
.	O
</s>
<s>
The	O
game	O
uses	O
an	O
AI	B-Application
system	O
which	O
employs	O
linear	O
back	O
framing	O
algorithms	O
to	O
learn	O
from	O
its	O
mistakes	O
and	O
become	O
increasingly	O
competent	O
in	O
battle	O
as	O
the	O
game	O
progresses	O
.	O
</s>
