<s>
Game	B-Device
Pak	I-Device
is	O
the	O
brand	O
name	O
for	O
ROM	B-Protocol
cartridges	I-Protocol
designed	O
by	O
Nintendo	O
for	O
some	O
of	O
their	O
earlier	O
video	O
game	O
systems	O
.	O
</s>
<s>
The	O
"	O
Game	B-Device
Pak	I-Device
"	O
moniker	O
was	O
officially	O
used	O
only	O
in	O
North	O
America	O
,	O
Europe	O
,	O
and	O
Oceania	O
.	O
</s>
<s>
In	O
Japan	O
,	O
as	O
well	O
as	O
other	O
Asian	O
territories	O
and	O
Latin	O
America	O
,	O
these	O
cartridges	B-Protocol
were	O
officially	O
called	O
.	O
</s>
<s>
All	O
cartridges	B-Protocol
,	O
excluding	O
those	O
for	O
Game	O
Boy	O
Advance	O
,	O
measure	O
5.8	O
by	O
6.5cm	O
.	O
</s>
<s>
The	O
cartridge	B-Protocol
provides	O
the	O
code	O
and	O
game	O
data	O
to	O
the	O
console	O
's	O
CPU	O
.	O
</s>
<s>
Some	O
cartridges	B-Protocol
include	O
a	O
small	O
battery	O
with	O
SRAM	B-Architecture
,	O
flash	B-Device
memory	I-Device
chip	O
,	O
or	O
EEPROM	B-General_Concept
,	O
which	O
allows	O
game	O
data	O
to	O
be	O
saved	O
when	O
the	O
console	O
is	O
turned	O
off	O
.	O
</s>
<s>
If	O
the	O
battery	O
runs	O
out	O
in	O
a	O
cartridge	B-Protocol
,	O
then	O
the	O
save	O
data	O
will	O
be	O
lost	O
,	O
however	O
,	O
it	O
is	O
possible	O
to	O
replace	O
the	O
battery	O
with	O
a	O
new	O
battery	O
.	O
</s>
<s>
To	O
do	O
this	O
,	O
the	O
cartridge	B-Protocol
must	O
be	O
unscrewed	O
,	O
opened	O
up	O
,	O
and	O
the	O
old	O
battery	O
would	O
be	O
removed	O
and	O
replaced	O
.	O
</s>
<s>
Before	O
2003	O
,	O
Nintendo	O
used	O
round	O
,	O
flat	O
watch	O
batteries	O
for	O
saving	O
information	O
on	O
the	O
cartridges	B-Protocol
.	O
</s>
<s>
These	O
batteries	O
were	O
replaced	O
in	O
newer	O
cartridges	B-Protocol
because	O
they	O
could	O
only	O
live	O
for	O
a	O
certain	O
amount	O
of	O
time	O
.	O
</s>
<s>
The	O
cartridge	B-Protocol
is	O
inserted	O
into	O
the	O
console	O
cartridge	B-Protocol
slot	O
.	O
</s>
<s>
If	O
the	O
cartridge	B-Protocol
is	O
removed	O
while	O
the	O
power	O
is	O
on	O
,	O
and	O
the	O
Game	O
Boy	O
does	O
not	O
automatically	O
reset	O
,	O
the	O
game	O
freezes	O
;	O
the	O
Game	O
Boy	O
may	O
exhibit	O
unexpected	O
behavior	O
,	O
such	O
as	O
rows	O
of	O
zeros	O
appearing	O
on	O
the	O
screen	O
,	O
the	O
sound	O
remaining	O
at	O
the	O
same	O
pitch	O
as	O
was	O
emitted	O
the	O
instant	O
the	O
game	O
was	O
pulled	O
out	O
,	O
saved	O
data	O
may	O
be	O
corrupted	O
,	O
and	O
hardware	O
may	O
be	O
damaged	O
.	O
</s>
<s>
This	O
applies	O
to	O
most	O
video	B-Device
game	I-Device
consoles	I-Device
that	O
use	O
cartridges	B-Protocol
.	O
</s>
<s>
The	O
original	O
Game	O
Boy	O
power	O
switch	O
was	O
designed	O
to	O
prevent	O
the	O
player	O
from	O
being	O
able	O
to	O
remove	O
the	O
cartridge	B-Protocol
while	O
the	O
power	O
is	O
on	O
.	O
</s>
<s>
Cartridges	B-Protocol
intended	O
only	O
for	O
Game	O
Boy	O
Color	O
(	O
and	O
not	O
for	O
the	O
original	O
Game	O
Boy	O
)	O
lack	O
the	O
"	O
notch	O
"	O
for	O
the	O
locking	O
mechanism	O
present	O
in	O
the	O
top	O
of	O
the	O
original	O
cartridges	B-Protocol
,	O
preventing	O
operation	O
on	O
an	O
original	O
Game	O
Boy	O
(	O
the	O
cartridge	B-Protocol
can	O
be	O
inserted	O
,	O
but	O
the	O
power	O
switch	O
cannot	O
be	O
moved	O
to	O
the	O
"	O
on	O
"	O
position	O
)	O
.	O
</s>
<s>
Even	O
if	O
this	O
was	O
bypassed	O
by	O
using	O
a	O
Game	O
Boy	O
Pocket	O
,	O
Game	O
Boy	O
Light	O
,	O
or	O
Super	B-Device
Game	I-Device
Boy	I-Device
,	O
and	O
Super	B-Device
Game	I-Device
Boy	I-Device
2	O
,	O
the	O
game	O
would	O
not	O
run	O
,	O
and	O
an	O
image	O
on	O
the	O
screen	O
would	O
inform	O
the	O
user	O
that	O
the	O
game	O
is	O
only	O
compatible	O
with	O
Game	O
Boy	O
Color	O
systems	O
.	O
</s>
<s>
One	O
exception	O
would	O
be	O
the	O
Kirby	B-Application
Tilt	I-Application
'	I-Application
n	I-Application
 '	I-Application
Tumble	I-Application
game	O
:	O
despite	O
the	O
game	B-Protocol
cartridge	I-Protocol
featuring	O
a	O
notch	O
,	O
enabling	O
it	O
to	O
be	O
inserted	O
on	O
the	O
original	O
Game	O
Boy	O
,	O
the	O
game	O
displays	O
an	O
error	O
message	O
indicating	O
that	O
it	O
only	O
plays	O
on	O
Game	O
Boy	O
Color	O
.	O
</s>
<s>
Chee	B-Application
Chai	I-Application
Alien	I-Application
and	O
Pocket	B-Device
Music	I-Device
are	O
incompatible	O
with	O
Game	O
Boy	O
Advance	O
models	O
,	O
displaying	O
an	O
error	O
message	O
indicating	O
that	O
they	O
only	O
play	O
on	O
Game	O
Boy	O
Color	O
.	O
</s>
<s>
Game	O
Boy	O
Advance	O
cartridges	B-Protocol
used	O
a	O
similar	O
physical	O
lock-out	O
feature	O
.	O
</s>
<s>
Notches	O
were	O
located	O
at	O
the	O
base	O
of	O
the	O
cartridge	B-Protocol
's	O
two	O
back	O
corners	O
.	O
</s>
<s>
One	O
of	O
these	O
notches	O
was	O
placed	O
as	O
to	O
avoid	O
pressing	O
a	O
switch	O
inside	O
the	O
cartridge	B-Protocol
slot	O
to	O
help	O
stabilize	O
it	O
.	O
</s>
<s>
When	O
an	O
older	O
Game	O
Boy	O
or	O
Game	O
Boy	O
Color	O
game	O
was	O
inserted	O
into	O
the	O
cartridge	B-Protocol
slot	O
,	O
the	O
switch	O
would	O
be	O
pressed	O
down	O
and	O
the	O
Game	O
Boy	O
Advance	O
would	O
start	O
in	O
Game	O
Boy	O
Color	O
mode	O
,	O
while	O
a	O
Game	O
Boy	O
Advance	O
cartridge	B-Protocol
would	O
not	O
touch	O
the	O
switch	O
and	O
the	O
system	O
would	O
start	O
in	O
Game	O
Boy	O
Advance	O
mode	O
.	O
</s>
<s>
The	O
Nintendo	O
DS	O
replaced	O
the	O
switch	O
with	O
a	O
solid	O
piece	O
of	O
plastic	O
that	O
would	O
allow	O
Game	O
Boy	O
Advance	O
cartridges	B-Protocol
to	O
be	O
inserted	O
into	O
Slot	O
2	O
,	O
but	O
would	O
prevent	O
an	O
older	O
Game	O
Boy	O
or	O
Game	O
Boy	O
Color	O
cartridge	B-Protocol
from	O
being	O
inserted	O
fully	O
into	O
the	O
slot	O
.	O
</s>
<s>
Excluding	O
game-specific	O
variations	O
,	O
there	O
are	O
four	O
types	O
of	O
cartridges	B-Protocol
compatible	O
with	O
Game	O
Boy	O
systems	O
:	O
</s>
<s>
Grey	O
cartridges	B-Protocol
(	O
also	O
known	O
as	O
class	O
A	O
)	O
are	O
compatible	O
with	O
all	O
Game	O
Boy	O
systems	O
,	O
excluding	O
Game	O
Boy	O
Micro	O
.	O
</s>
<s>
Some	O
of	O
these	O
cartridges	B-Protocol
are	O
in	O
alternative	O
colors	O
,	O
such	O
as	O
red	O
or	O
blue	O
for	O
Pokémon	B-Application
Red	I-Application
and	I-Application
Blue	I-Application
,	O
and	O
yellow	O
for	O
the	O
Donkey	B-Application
Kong	I-Application
Land	I-Application
series	O
.	O
</s>
<s>
The	O
games	O
on	O
these	O
cartridges	B-Protocol
are	O
programmed	O
in	O
black	O
and	O
white	O
;	O
the	O
Game	O
Boy	O
Color	O
and	O
later	O
systems	O
provide	O
selectable	O
color	O
palettes	O
for	O
them	O
.	O
</s>
<s>
Some	O
grey	O
cartridges	B-Protocol
that	O
were	O
released	O
between	O
1994	O
and	O
1998	O
have	O
Super	B-Device
Game	I-Device
Boy	I-Device
enhancements	O
.	O
</s>
<s>
Even	O
fewer	O
grey	O
cartridges	B-Protocol
were	O
released	O
with	O
built-in	O
features	O
that	O
made	O
them	O
protrude	O
from	O
the	O
slot	O
,	O
but	O
included	O
the	O
notch	O
to	O
be	O
compatible	O
with	O
the	O
original	O
Game	O
Boy	O
(	O
notably	O
the	O
Game	B-Application
Boy	I-Application
Camera	I-Application
)	O
.	O
</s>
<s>
Black	O
cartridges	B-Protocol
(	O
also	O
known	O
as	O
class	O
B	O
or	O
Dual	O
Mode	O
)	O
are	O
compatible	O
with	O
all	O
Game	O
Boy	O
systems	O
,	O
excluding	O
Game	O
Boy	O
Micro	O
.	O
</s>
<s>
Although	O
the	O
games	O
on	O
these	O
cartridges	B-Protocol
are	O
programmed	O
in	O
color	O
,	O
they	O
can	O
still	O
be	O
played	O
in	O
monochrome	O
on	O
Game	O
Boy	O
,	O
Game	O
Boy	O
Pocket	O
,	O
Game	O
Boy	O
Light	O
and	O
Super	B-Device
Game	I-Device
Boy	I-Device
(	O
and	O
its	O
Japanese	O
follow-up	O
)	O
.	O
</s>
<s>
Examples	O
of	O
black-cartridge	O
games	O
are	O
Pokémon	O
Yellow	O
:	O
Special	O
Pikachu	O
Edition	O
,	O
Pokémon	B-Application
Gold	I-Application
and	I-Application
Silver	I-Application
(	O
however	O
,	O
the	O
actual	O
colors	O
of	O
these	O
three	O
cartridges	B-Protocol
are	O
yellow	O
,	O
gold	O
,	O
and	O
silver	O
,	O
respectively	O
)	O
.	O
</s>
<s>
Games	O
such	O
as	O
Wario	B-Application
Land	I-Application
II	I-Application
and	O
The	B-Application
Legend	I-Application
of	I-Application
Zelda	I-Application
:	I-Application
Link	I-Application
's	I-Application
Awakening	I-Application
DX	I-Application
were	O
full-color	O
re-releases	O
of	O
gray-cartridge	O
games	O
but	O
with	O
additional	O
content	O
only	O
available	O
on	O
the	O
Game	O
Boy	O
Color	O
.	O
</s>
<s>
Some	O
black	O
cartridges	B-Protocol
have	O
Super	B-Device
Game	I-Device
Boy	I-Device
enhancements	O
.	O
</s>
<s>
Even	O
some	O
games	O
had	O
built-in	O
features	O
similar	O
to	O
what	O
the	O
later	O
clear	O
cartridges	B-Protocol
did	O
,	O
like	O
rumble	B-Device
features	I-Device
(	O
Pokémon	B-Application
Pinball	I-Application
)	O
and	O
infrared	O
receiver	O
(	O
Robopon	B-Application
Sun	I-Application
,	I-Application
Star	I-Application
,	I-Application
and	I-Application
Moon	I-Application
Versions	I-Application
)	O
.	O
</s>
<s>
Clear	O
cartridges	B-Protocol
(	O
also	O
known	O
as	O
class	O
C	O
)	O
are	O
compatible	O
with	O
Game	O
Boy	O
Color	O
and	O
the	O
Game	O
Boy	O
Advance	O
systems	O
,	O
excluding	O
Game	O
Boy	O
Micro	O
.	O
</s>
<s>
Some	O
games	O
(	O
such	O
as	O
Pokémon	B-Application
Crystal	I-Application
)	O
were	O
released	O
in	O
specially	O
colored	O
cartridges	B-Protocol
,	O
as	O
had	O
been	O
done	O
before	O
,	O
but	O
the	O
new	O
colors	O
remained	O
translucent	O
.	O
</s>
<s>
Some	O
clear	O
cartridges	B-Protocol
have	O
built-in	O
features	O
,	O
including	O
rumble	B-Device
features	I-Device
(	O
Perfect	B-Application
Dark	I-Application
)	O
and	O
tilt	O
sensors	O
(	O
Kirby	B-Application
Tilt	I-Application
'	I-Application
n	I-Application
 '	I-Application
Tumble	I-Application
)	O
.	O
</s>
<s>
These	O
cartridges	B-Protocol
are	O
a	O
slightly	O
different	O
shape	O
from	O
the	O
earlier	O
varieties	O
,	O
and	O
would	O
obstruct	O
the	O
latch	O
if	O
inserted	O
into	O
the	O
original	O
Game	O
Boy	O
.	O
</s>
<s>
Unlike	O
the	O
Gray	O
cartridges	B-Protocol
and	O
Black	O
cartridges	B-Protocol
,	O
the	O
Clear	O
cartridges	B-Protocol
cannot	O
be	O
played	O
on	O
a	O
Game	O
Boy	O
Pocket	O
,	O
a	O
Game	O
Boy	O
Light	O
or	O
on	O
Super	B-Device
Game	I-Device
Boy	I-Device
(	O
or	O
even	O
its	O
Japanese	O
follow-up	O
)	O
.	O
</s>
<s>
Some	O
class	O
C	O
cartridges	B-Protocol
(	O
European	O
version	O
of	O
V-Rally	B-Application
:	I-Application
Championship	I-Application
Edition	I-Application
)	O
used	O
a	O
solid	O
cartridge	B-Protocol
design	O
,	O
like	O
in	O
Class	O
B	O
.	O
</s>
<s>
Advance	O
cartridges	B-Protocol
(	O
also	O
known	O
as	O
class	O
D	O
)	O
are	O
half	O
the	O
size	O
of	O
all	O
earlier	O
cartridges	B-Protocol
and	O
are	O
compatible	O
with	O
Game	O
Boy	O
Advance	O
and	O
later	O
systems	O
including	O
the	O
Nintendo	O
DS	O
.	O
</s>
<s>
Some	O
cartridges	B-Protocol
are	O
colored	O
to	O
resemble	O
the	O
game	O
(	O
usually	O
for	O
the	O
Pokémon	O
series	O
;	O
Pokémon	B-Device
Emerald	I-Device
,	O
for	O
example	O
,	O
being	O
a	O
clear	O
emerald	O
green	O
)	O
.	O
</s>
<s>
Some	O
Advance	O
cartridges	B-Protocol
have	O
built-in	O
features	O
,	O
including	O
rumble	B-Device
features	I-Device
(	O
Drill	B-Application
Dozer	I-Application
)	O
,	O
tilt	O
sensors	O
(	O
WarioWare	O
:	O
Twisted	O
!,	O
Yoshi	B-Application
's	I-Application
Universal	I-Application
Gravitation	I-Application
)	O
and	O
solar	O
sensors	O
(	O
Boktai	B-Application
)	O
.	O
</s>
