<s>
Creatures	B-Application
is	O
an	O
artificial	O
life	O
simulation	O
packaged	O
as	O
a	O
video	O
game	O
developed	O
by	O
British	O
studio	O
Creature	O
Labs	O
for	O
Windows	B-Application
,	O
and	O
was	O
ported	O
to	O
Macintosh	B-Device
,	O
PlayStation	B-Device
,	O
and	O
Game	B-Device
Boy	I-Device
Advance	I-Device
.	O
</s>
<s>
It	O
is	O
the	O
first	O
game	O
in	O
the	O
Creatures	B-Application
series	O
.	O
</s>
<s>
Creatures	B-Application
is	O
a	O
game	O
which	O
allows	O
the	O
player	O
to	O
hatch	O
and	O
then	O
raise	O
anthropomorphic	O
beings	O
known	O
as	O
Norns	O
.	O
</s>
<s>
Creatures	B-Application
is	O
an	O
artificial	O
life	O
simulation	O
where	O
the	O
user	O
hatches	O
small	O
furry	O
animals	O
and	O
teaches	O
them	O
how	O
to	O
behave	O
,	O
or	O
leaves	O
them	O
to	O
learn	O
on	O
their	O
own	O
.	O
</s>
<s>
These	O
"	O
Norns	O
"	O
can	O
talk	O
,	O
feed	O
themselves	O
,	O
and	O
protect	O
themselves	O
against	O
vicious	O
creatures	B-Application
called	O
Grendels	O
.	O
</s>
<s>
Neural	B-Architecture
networks	I-Architecture
are	O
used	O
by	O
the	O
creatures	B-Application
to	O
learn	O
what	O
to	O
do	O
.	O
</s>
<s>
The	O
game	O
is	O
regarded	O
as	O
a	O
breakthrough	O
in	O
artificial	O
life	O
research	O
,	O
which	O
aims	O
to	O
model	O
the	O
behavior	O
of	O
creatures	B-Application
interacting	O
with	O
their	O
environment	O
.	O
</s>
<s>
According	O
to	O
Millennium	O
,	O
every	O
copy	O
of	O
Creatures	B-Application
contains	O
a	O
unique	O
starting	O
set	O
of	O
eggs	O
,	O
whose	O
genomes	O
are	O
not	O
replicated	O
on	O
any	O
other	O
copy	O
of	O
the	O
game	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
version	O
received	O
"	O
unfavorable	O
"	O
reviews	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
At	O
the	O
time	O
,	O
John	O
Moore	O
of	O
Mindscape	O
explained	O
that	O
the	O
company	O
"expect[s]	O
to	O
sell	O
more	O
than	O
200,000	O
Creatures	B-Application
by	O
the	O
end	O
of	O
the	O
year.	O
"	O
</s>
