<s>
is	O
a	O
1998	O
role	O
playing	O
video	O
game	O
developed	O
by	O
FromSoftware	O
for	O
the	O
PlayStation	B-Device
.	O
</s>
<s>
Shadow	B-Application
Tower	I-Application
shares	O
many	O
similarities	O
with	O
the	O
King	B-Application
's	I-Application
Field	I-Application
series	O
of	O
video	O
games	O
.	O
</s>
<s>
A	O
sequel	O
,	O
Shadow	B-Application
Tower	I-Application
Abyss	I-Application
,	O
was	O
released	O
for	O
the	O
PlayStation	B-Device
2	I-Device
exclusively	O
in	O
Japan	O
.	O
</s>
<s>
Shadow	B-Application
Tower	I-Application
is	O
an	O
action-oriented	O
dungeon	O
crawl	O
very	O
similar	O
to	O
King	B-Application
's	I-Application
Field	I-Application
.	O
</s>
<s>
Some	O
differences	O
from	O
the	O
previous	O
King	B-Application
's	I-Application
Field	I-Application
installments	O
are	O
a	O
shield	O
that	O
acts	O
as	O
an	O
actual	O
usable	O
item	O
that	O
must	O
be	O
raised	O
to	O
block	O
attacks	O
,	O
a	O
more	O
in-depth	O
equipment	O
screen	O
,	O
and	O
the	O
new	O
progression	O
system	O
.	O
</s>
<s>
Shadow	B-Application
Tower	I-Application
was	O
developed	O
by	O
FromSoftware	O
,	O
a	O
Japanese	O
game	O
company	O
that	O
had	O
made	O
its	O
name	O
with	O
the	O
King	B-Application
's	I-Application
Field	I-Application
series	O
,	O
with	O
which	O
Shadow	B-Application
Tower	I-Application
shared	O
several	O
gameplay	O
and	O
thematic	O
elements	O
.	O
</s>
<s>
While	O
it	O
bears	O
several	O
tonal	O
and	O
mechanical	O
similarities	O
to	O
the	O
King	B-Application
's	I-Application
Field	I-Application
series	O
,	O
the	O
team	O
wanted	O
to	O
create	O
an	O
entirely	O
different	O
franchise	O
.	O
</s>
<s>
It	O
used	O
a	O
similar	O
engine	O
base	O
to	O
the	O
King	B-Application
's	I-Application
Field	I-Application
series	O
,	O
though	O
it	O
was	O
redesigned	O
and	O
polished	O
.	O
</s>
<s>
The	O
game	O
was	O
produced	O
concurrently	O
with	O
Echo	B-Application
Night	I-Application
,	O
and	O
had	O
some	O
crossover	O
with	O
the	O
sound	O
staff	O
.	O
</s>
<s>
As	O
the	O
game	O
uses	O
little	O
in-game	O
music	O
,	O
many	O
of	O
his	O
contributions	O
were	O
unused	O
,	O
though	O
some	O
were	O
later	O
used	O
for	O
Evergrace	B-Application
.	O
</s>
<s>
The	O
game	O
received	O
an	O
average	O
of	O
49%	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
GameRankings	O
.	O
</s>
