<s>
Earth	B-Application
2140	I-Application
is	O
a	O
2D	O
real-time	O
strategy	B-Application
computer	I-Application
game	I-Application
created	O
in	O
1997	O
by	O
Polish-based	O
Reality	O
Pump	O
Studios	O
and	O
published	O
by	O
TopWare	O
Interactive	O
(	O
later	O
acquired	O
by	O
Zuxxez	O
Entertainment	O
)	O
.	O
</s>
<s>
It	O
has	O
two	O
sequels	O
,	O
Earth	B-Application
2150	I-Application
and	O
Earth	B-Application
2160	I-Application
.	O
</s>
<s>
Earth	B-Application
2140	I-Application
takes	O
place	O
in	O
the	O
year	O
2140	O
.	O
</s>
<s>
As	O
the	O
less	O
technologically	O
advanced	O
of	O
the	O
two	O
factions	O
,	O
the	O
ED	O
utilizes	O
cyborgs	O
,	O
traditional	O
vehicles	O
such	O
as	O
tanks	O
,	O
and	O
armed	O
helicopters	B-Application
in	O
its	O
arsenal	O
.	O
</s>
<s>
Because	O
of	O
its	O
technological	O
disadvantage	O
,	O
the	O
ED	O
finds	O
itself	O
more	O
often	O
on	O
the	O
defensive	O
throughout	O
the	O
Earth	B-Application
2140	I-Application
storyline	O
.	O
</s>
<s>
Earth	B-Application
2140	I-Application
basically	O
requires	O
the	O
player	O
to	O
complete	O
various	O
objectives	O
,	O
mostly	O
destroying	O
all	O
opposing	O
units	O
and	O
structures	O
(	O
or	O
capturing	O
them	O
)	O
.	O
</s>
<s>
Unlike	O
most	O
strategy	B-Application
games	I-Application
,	O
credits	O
cannot	O
be	O
refunded	O
when	O
recruitment	O
is	O
cancelled	O
and	O
structures	O
cannot	O
be	O
sold	O
.	O
</s>
<s>
Not	O
every	O
vehicle	O
is	O
land-based	O
;	O
vehicles	O
like	O
submarines	O
are	O
sea-based	O
and	O
vehicles	O
like	O
helicopters	B-Application
are	O
air-based	O
.	O
</s>
