<s>
Jack	B-Application
Bros	I-Application
.	I-Application
is	O
an	O
action	B-Application
video	I-Application
game	I-Application
developed	O
and	O
published	O
by	O
Atlus	O
for	O
the	O
Virtual	B-Device
Boy	I-Device
,	O
released	O
in	O
late	O
1995	O
in	O
Japan	O
and	O
North	O
America	O
.	O
</s>
<s>
It	O
is	O
a	O
spin-off	O
from	O
Atlus	O
 '	O
video	O
game	O
series	O
Megami	B-Application
Tensei	I-Application
,	O
and	O
was	O
the	O
first	O
entry	O
to	O
be	O
released	O
outside	O
Japan	O
.	O
</s>
<s>
The	O
player	O
takes	O
the	O
role	O
of	O
one	O
of	O
the	O
three	O
Jack	B-Application
brothers	I-Application
–	O
Jack	O
Frost	O
,	O
Jack	O
Lantern	O
,	O
or	O
Jack	O
Skelton	O
–	O
who	O
have	O
visited	O
the	O
human	O
world	O
for	O
Halloween	B-Application
,	O
and	O
need	O
to	O
return	O
to	O
the	O
fairy	O
world	O
before	O
the	O
portal	O
connecting	O
the	O
two	O
worlds	O
closes	O
.	O
</s>
<s>
It	O
received	O
generally	O
positive	O
reception	O
for	O
its	O
gameplay	O
,	O
but	O
was	O
criticized	O
for	O
the	O
lack	O
of	O
puzzle	O
elements	O
and	O
under-utilization	O
of	O
the	O
Virtual	B-Device
Boy	I-Device
's	O
3D	O
effect	O
.	O
</s>
<s>
Jack	B-Application
Bros	I-Application
.	I-Application
follows	O
the	O
three	O
Jack	B-Application
brothers	I-Application
–	O
Jack	O
Frost	O
,	O
Jack	O
Lantern	O
and	O
Jack	O
Skelton	O
–	O
who	O
have	O
traveled	O
from	O
the	O
fairy	O
world	O
to	O
the	O
human	O
world	O
through	O
a	O
portal	O
that	O
opens	O
every	O
year	O
on	O
Halloween	B-Application
.	O
</s>
<s>
If	O
the	O
timer	O
reaches	O
zero	O
,	O
the	O
player	O
reaches	O
a	O
game	B-Application
over	I-Application
state	O
,	O
although	O
they	O
are	O
given	O
the	O
option	O
to	O
restart	O
from	O
the	O
beginning	O
of	O
the	O
current	O
area	O
.	O
</s>
<s>
Jack	B-Application
Bros	I-Application
.	I-Application
was	O
developed	O
and	O
published	O
by	O
Atlus	O
for	O
the	O
Virtual	B-Device
Boy	I-Device
,	O
and	O
was	O
released	O
on	O
September	O
29	O
,	O
1995	O
in	O
Japan	O
,	O
and	O
somewhere	O
between	O
late	O
October	O
and	O
November	O
1995	O
in	O
North	O
America	O
.	O
</s>
<s>
According	O
to	O
Nintendo	B-Application
Power	I-Application
,	O
Atlus	O
did	O
not	O
reveal	O
any	O
details	O
about	O
the	O
game	O
's	O
development	O
,	O
although	O
it	O
is	O
known	O
that	O
it	O
initially	O
was	O
planned	O
to	O
be	O
titled	O
Devil	B-Application
Busters	I-Application
.	O
</s>
<s>
It	O
is	O
a	O
spin-off	O
from	O
Atlus	O
 '	O
Megami	B-Application
Tensei	I-Application
series	O
,	O
and	O
the	O
first	O
entry	O
to	O
be	O
released	O
outside	O
Japan	O
.	O
</s>
<s>
Being	O
a	O
Virtual	B-Device
Boy	I-Device
title	O
,	O
it	O
made	O
use	O
of	O
the	O
system	O
's	O
stereoscopic	B-Algorithm
3D	I-Algorithm
to	O
display	O
conventional	O
2D	O
graphics	O
in	O
monochrome	O
red	O
and	O
black	O
visuals	O
,	O
and	O
a	O
graphics	O
technique	O
called	O
parallax	O
scrolling	O
,	O
to	O
create	O
a	O
3D	O
effect	O
.	O
</s>
<s>
From	O
contemporary	O
reviews	O
,	O
Nintendo	B-Application
Power	I-Application
praised	O
the	O
games	O
graphics	O
and	O
pacing	O
,	O
noting	O
that	O
it	O
was	O
"	O
more	O
challenging	O
than	O
you	O
might	O
expect	O
"	O
while	O
critiquing	O
in	O
the	O
game	O
text	O
as	O
"	O
poor	O
"	O
.	O
</s>
<s>
Jack	B-Application
Bros	I-Application
.	I-Application
was	O
well	O
received	O
in	O
retrospective	O
reviews	O
,	O
with	O
multiple	O
critics	O
calling	O
it	O
one	O
of	O
the	O
best	O
Virtual	B-Device
Boy	I-Device
games	O
;	O
some	O
thought	O
it	O
was	O
held	O
back	O
by	O
the	O
platform	O
,	O
and	O
that	O
it	O
should	O
be	O
made	O
available	O
on	O
other	O
platforms	O
,	O
such	O
as	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
.	O
</s>
<s>
In	O
2003	O
,	O
the	O
staff	O
at	O
Tips	O
&	O
Tricks	O
stated	O
it	O
to	O
be	O
the	O
most	O
uncommon	O
North	O
American	O
Virtual	B-Device
Boy	I-Device
release	O
,	O
giving	O
it	O
a	O
rarity	O
rating	O
of	O
6/10	O
based	O
on	O
a	O
consultation	O
with	O
Digital	O
Press	O
.	O
</s>
<s>
GamesRadar	O
's	O
Mikel	O
Reparaz	O
called	O
it	O
"	O
excellent	O
 [ and ] 	O
solidly	O
designed	O
"	O
to	O
the	O
point	O
where	O
he	O
would	O
keep	O
playing	O
it	O
despite	O
the	O
eye	O
strain	O
the	O
Virtual	B-Device
Boy	I-Device
would	O
give	O
him	O
.	O
</s>
<s>
Frear	O
enjoyed	O
the	O
visual	O
design	O
,	O
calling	O
the	O
enemy	O
designs	O
reminiscent	O
of	O
The	B-Application
Legend	I-Application
of	I-Application
Zelda	I-Application
,	O
and	O
particularly	O
praised	O
the	O
boss	O
characters	O
for	O
looking	O
interesting	O
,	O
with	O
the	O
first	O
boss	O
as	O
the	O
sole	O
exception	O
.	O
</s>
<s>
Reparaz	O
said	O
that	O
Jack	B-Application
Bros	I-Application
.	I-Application
had	O
one	O
of	O
the	O
best	O
soundtracks	O
on	O
the	O
Virtual	B-Device
Boy	I-Device
,	O
particularly	O
noting	O
the	O
track	O
from	O
the	O
area	O
"	O
Grim	O
Reaper	O
's	O
Cavern	O
"	O
.	O
</s>
