<s>
Xenosaga	B-Application
:	I-Application
Pied	I-Application
Piper	I-Application
is	O
a	O
2004	O
role-playing	O
video	O
game	O
co-developed	O
by	O
Monolith	O
Soft	O
,	O
Namco	O
,	O
and	O
Tom	O
Create	O
.	O
</s>
<s>
The	O
game	O
was	O
published	O
by	O
Namco	O
in	O
2004	O
for	O
mobile	B-Application
devices	I-Application
.	O
</s>
<s>
A	O
spin-off	O
of	O
the	O
Xenosaga	O
trilogy	O
and	O
forming	O
part	O
of	O
the	O
Xeno	B-Application
metaseries	O
,	O
the	O
storyline	O
follows	O
the	O
human	O
life	O
of	O
cyborg	O
Ziggurat	O
8	O
—	O
a	O
key	O
character	O
in	O
the	O
Xenosaga	O
trilogy	O
—	O
a	O
century	O
before	O
the	O
events	O
of	O
Xenosaga	B-Application
Episode	I-Application
I	I-Application
.	O
Gameplay	O
follows	O
a	O
similar	O
system	O
to	O
the	O
mainline	O
Xenosaga	O
games	O
but	O
adjusted	O
for	O
mobile	B-Application
devices	I-Application
.	O
</s>
<s>
Similar	O
to	O
the	O
rest	O
of	O
the	O
Xenosaga	O
series	O
,	O
Xenosaga	B-Application
:	I-Application
Pied	I-Application
Piper	I-Application
is	O
a	O
role-playing	O
video	O
game	O
in	O
which	O
the	O
player	O
controls	O
a	O
party	O
of	O
characters	O
to	O
progress	O
through	O
environments	O
linked	O
to	O
the	O
main	O
narrative	O
.	O
</s>
<s>
Enemies	O
encountered	O
during	O
exploration	O
are	O
fought	O
using	O
a	O
turn-based	O
battle	O
system	O
carrying	O
over	O
mechanics	O
from	O
Xenosaga	B-Application
Episode	I-Application
I	I-Application
;	O
characters	O
can	O
save	O
"	O
Boost	O
"	O
points	O
to	O
interrupt	O
an	O
enemy	O
's	O
turn	O
to	O
perform	O
an	O
early	O
action	O
.	O
</s>
<s>
Pied	O
Piper	O
is	O
set	O
a	O
century	O
before	O
the	O
events	O
of	O
Xenosaga	B-Application
Episode	I-Application
I	I-Application
;	O
taking	O
place	O
4000	O
years	O
in	O
the	O
future	O
,	O
humanity	O
has	O
left	O
Earth	O
and	O
established	O
civilization	O
in	O
another	O
part	O
of	O
the	O
Milky	O
Way	O
galaxy	O
under	O
the	O
rule	O
of	O
the	O
Galaxy	O
Federation	O
.	O
</s>
<s>
Ziggurat	O
8	O
's	O
history	O
with	O
Voyager	O
is	O
alluded	O
to	O
when	O
the	O
characters	O
cross	O
paths	O
throughout	O
the	O
series	O
,	O
but	O
it	O
is	O
not	O
explained	O
fully	O
until	O
Xenosaga	B-Application
Episode	I-Application
III	I-Application
,	O
which	O
includes	O
an	O
extensive	O
plot	O
summary	O
of	O
Pied	O
Piper	O
and	O
major	O
character	O
profiles	O
.	O
</s>
<s>
Takahashi	O
later	O
stated	O
that	O
Ziggy	O
's	O
story	O
was	O
originally	O
part	O
of	O
the	O
planned	O
scenario	O
for	O
Xenosaga	B-Application
Episode	I-Application
II	I-Application
.	O
</s>
