<s>
The	O
PlayStation	B-Device
2	I-Device
(	O
PS2	B-Device
)	O
is	O
a	O
home	B-Device
video	I-Device
game	I-Device
console	I-Device
developed	O
and	O
marketed	O
by	O
Sony	O
Computer	O
Entertainment	O
.	O
</s>
<s>
It	O
is	O
the	O
successor	O
to	O
the	O
original	B-Device
PlayStation	I-Device
,	O
as	O
well	O
as	O
the	O
second	O
installment	O
in	O
the	O
PlayStation	B-Device
brand	O
of	O
consoles	O
.	O
</s>
<s>
As	O
a	O
sixth-generation	B-Application
console	I-Application
,	O
it	O
competed	O
with	O
Nintendo	O
's	O
GameCube	B-Application
,	O
Sega	O
's	O
Dreamcast	B-Operating_System
,	O
and	O
Microsoft	O
's	O
Xbox	B-Application
.	O
</s>
<s>
It	O
is	O
the	O
best-selling	B-Application
video	I-Application
game	I-Application
console	I-Application
of	I-Application
all	I-Application
time	I-Application
,	O
having	O
sold	O
over	O
155	O
million	O
units	O
worldwide	O
.	O
</s>
<s>
The	O
PS2	B-Device
offered	O
backward-compatibility	B-General_Concept
for	O
its	O
predecessor	O
's	O
DualShock	B-Device
controller	O
,	O
as	O
well	O
as	O
its	O
games	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
received	O
widespread	O
critical	O
acclaim	O
upon	O
release	O
.	O
</s>
<s>
A	O
total	O
of	O
over	B-Device
4,000	I-Device
game	I-Device
titles	I-Device
were	O
released	O
worldwide	O
,	O
with	O
over	O
1.5	O
billion	O
copies	O
sold	O
.	O
</s>
<s>
In	O
2004	O
,	O
Sony	O
released	O
a	O
smaller	O
,	O
lighter	O
revision	O
of	O
the	O
console	O
known	O
as	O
the	O
PS2	B-Device
Slim	O
.	O
</s>
<s>
Even	O
after	O
the	O
release	O
of	O
its	O
successor	O
,	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
,	O
it	O
remained	O
popular	O
well	O
into	O
the	O
seventh	B-Application
generation	I-Application
.	O
</s>
<s>
It	O
continued	O
to	O
be	O
produced	O
until	O
the	O
beginning	O
of	O
2013	O
when	O
Sony	O
finally	O
announced	O
that	O
it	O
had	O
been	O
discontinued	O
after	O
over	O
twelve	O
years	O
of	O
production	O
,	O
one	O
of	O
the	O
longest	O
lifespans	O
of	O
any	O
video	B-Application
game	I-Application
console	I-Application
.	O
</s>
<s>
Released	O
in	O
1994	O
,	O
the	O
original	B-Device
PlayStation	I-Device
proved	O
to	O
be	O
a	O
phenomenal	O
worldwide	O
success	O
and	O
signalled	O
Sony	O
's	O
rise	O
to	O
power	O
in	O
the	O
video	O
game	O
industry	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
enjoyed	O
particular	O
success	O
outside	O
Japan	O
in	O
part	O
due	O
to	O
Sony	O
's	O
refined	O
development	B-Application
kits	I-Application
,	O
large-scale	O
advertising	O
campaigns	O
,	O
and	O
strong	O
third-party	O
developer	O
support	O
.	O
</s>
<s>
Sega	O
,	O
spurred	O
on	O
by	O
its	O
declining	O
market	O
share	O
and	O
significant	O
financial	O
losses	O
,	O
launched	O
the	B-Operating_System
Dreamcast	I-Operating_System
in	O
1998	O
as	O
a	O
last-ditch	O
attempt	O
to	O
stay	O
in	O
the	O
industry	O
.	O
</s>
<s>
Though	O
Sony	O
has	O
kept	O
details	B-Device
of	O
the	O
PlayStation	B-Device
2	I-Device
's	O
development	O
secret	O
,	O
Ken	O
Kutaragi	O
,	O
the	O
chief	O
designer	O
of	O
the	O
original	B-Device
PlayStation	I-Device
,	O
reportedly	O
began	O
working	O
on	O
a	O
second	O
console	O
around	O
the	O
time	O
of	O
the	O
original	B-Device
PlayStation	I-Device
's	O
launch	O
in	O
late	O
1994	O
.	O
</s>
<s>
By	O
early	O
1997	O
,	O
the	O
press	O
was	O
reporting	O
that	O
a	O
new	O
PlayStation	B-Device
was	O
being	O
developed	O
and	O
would	O
have	O
backward-compatibility	B-General_Concept
with	O
the	O
original	B-Device
PlayStation	I-Device
,	O
a	O
built-in	O
DVD	B-Device
player	I-Device
,	O
and	O
Internet	O
connectivity	O
.	O
</s>
<s>
Sony	O
announced	O
the	O
PlayStation	B-Device
2	I-Device
on	O
March	O
2	O
,	O
1999	O
.	O
</s>
<s>
Sega	O
's	O
Dreamcast	B-Operating_System
enjoyed	O
a	O
successful	O
US	O
launch	O
on	O
September	O
9	O
of	O
that	O
year	O
;	O
fuelled	O
by	O
a	O
large	O
marketing	O
campaign	O
,	O
it	O
sold	O
over	O
500,000	O
units	O
within	O
two	O
weeks	O
.	O
</s>
<s>
Sony	O
unveiled	O
the	O
PlayStation	B-Device
2	I-Device
at	O
the	O
Tokyo	O
Game	O
Show	O
on	O
20	O
September	O
1999	O
.	O
</s>
<s>
Sony	O
showed	O
fully	O
playable	O
demos	O
of	O
upcoming	O
PlayStation	B-Device
2	I-Device
games	I-Device
including	O
Gran	B-Application
Turismo	I-Application
2000	I-Application
(	O
later	O
released	O
as	O
Gran	B-Application
Turismo	I-Application
3	I-Application
:	I-Application
A-Spec	I-Application
)	O
and	O
Tekken	B-Application
Tag	I-Application
Tournament	I-Application
—	O
which	O
showed	O
the	O
console	O
's	O
graphic	O
abilities	O
and	O
power	O
.	O
</s>
<s>
The	O
PS2	B-Device
was	O
launched	O
in	O
March	O
2000	O
in	O
Japan	O
,	O
October	O
in	O
North	O
America	O
,	O
and	O
November	O
in	O
Europe	O
.	O
</s>
<s>
Sales	O
of	O
the	O
console	O
,	O
games	O
and	O
accessories	O
pulled	O
in	O
$250	O
million	O
on	O
the	O
first	O
day	O
,	O
beating	O
the	O
$97	O
million	O
made	O
on	O
the	O
first	O
day	O
of	O
the	B-Operating_System
Dreamcast	I-Operating_System
.	O
</s>
<s>
Directly	O
after	O
its	O
release	O
,	O
it	O
was	O
difficult	O
to	O
find	O
PS2	B-Device
units	O
on	O
retailer	O
shelves	O
due	O
to	O
manufacturing	O
delays	O
.	O
</s>
<s>
Another	O
option	O
was	O
purchasing	O
the	O
console	O
online	O
through	O
auction	O
websites	O
such	O
as	O
eBay	B-Application
,	O
where	O
people	O
paid	O
over	O
a	O
thousand	O
dollars	O
for	O
the	O
console	O
.	O
</s>
<s>
The	O
PS2	B-Device
initially	O
sold	O
well	O
partly	O
on	O
the	O
basis	O
of	O
the	O
strength	O
of	O
the	O
PlayStation	B-Device
brand	O
and	O
the	O
console	O
's	O
backward	B-General_Concept
compatibility	I-General_Concept
,	O
selling	O
its	O
entire	O
inventory	O
of	O
1.4	O
million	O
units	O
in	O
Japan	O
by	O
31	O
March	O
2000	O
,	O
less	O
than	O
a	O
month	O
after	O
launch	O
.	O
</s>
<s>
Backward	B-General_Concept
compatibility	I-General_Concept
had	O
been	O
widely	O
seen	O
as	O
a	O
desirable	O
feature	O
for	O
consumers	O
since	O
the	O
debut	O
of	O
the	O
first	O
successor	O
video	B-Application
game	I-Application
console	I-Application
,	O
but	O
prior	O
to	O
the	O
PlayStation	B-Device
2	I-Device
only	O
one	O
console	O
had	O
featured	O
true	O
backward	B-General_Concept
compatibility	I-General_Concept
(	O
i.e.	O
</s>
<s>
without	O
the	O
use	O
of	O
add-ons	O
)	O
,	O
the	O
Atari	B-General_Concept
7800	I-General_Concept
,	O
due	O
to	O
the	O
added	O
hardware	O
costs	O
and	O
industry	O
concerns	O
that	O
backward	B-General_Concept
compatibility	I-General_Concept
could	O
cause	O
the	O
console	O
to	O
appear	O
to	O
be	O
a	O
merely	O
a	O
new	O
model	O
of	O
its	O
predecessor	O
or	O
lead	O
developers	O
to	O
prefer	O
making	O
games	O
for	O
the	O
predecessor	O
system	O
.	O
</s>
<s>
Later	O
,	O
Sony	O
added	O
new	O
development	B-Application
kits	I-Application
for	O
game	O
developers	O
and	O
more	O
PS2	B-Device
units	O
for	O
consumers	O
.	O
</s>
<s>
The	O
PS2	B-Device
's	O
built-in	O
functionality	O
also	O
expanded	O
its	O
audience	O
beyond	O
the	O
gamer	O
,	O
as	O
its	O
debut	O
pricing	O
was	O
less	O
than	O
many	O
standalone	O
DVD	B-Device
players	I-Device
on	O
the	O
market	O
.	O
</s>
<s>
Marketing	O
for	O
the	O
PlayStation	B-Device
2	I-Device
reverted	O
to	O
the	O
same	O
tactic	O
used	O
in	O
the	O
early	O
days	O
of	O
the	O
original	B-Device
PlayStation	I-Device
:	O
use	O
17-year-olds	O
as	O
the	O
target	O
audience	O
,	O
since	O
younger	O
audiences	O
aspire	O
to	O
be	O
teenagers	O
and	O
older	O
audiences	O
enjoy	O
video	O
games	O
at	O
the	O
same	O
level	O
they	O
did	O
when	O
they	O
were	O
17	O
.	O
</s>
<s>
The	O
success	O
of	O
the	O
PS2	B-Device
at	O
the	O
end	O
of	O
2000	O
caused	O
Sega	O
problems	O
both	O
financially	O
and	O
competitively	O
,	O
and	O
Sega	O
announced	O
the	O
discontinuation	O
of	O
the	B-Operating_System
Dreamcast	I-Operating_System
in	O
March	O
2001	O
,	O
just	O
18	O
months	O
after	O
its	O
successful	O
Western	O
launch	O
.	O
</s>
<s>
Despite	O
the	B-Operating_System
Dreamcast	I-Operating_System
still	O
receiving	O
support	O
through	O
2001	O
,	O
the	O
PS2	B-Device
remained	O
the	O
only	O
sixth-generation	B-Application
console	I-Application
for	O
over	O
6	O
months	O
before	O
it	O
faced	O
competition	O
from	O
new	O
rivals	O
:	O
Nintendo	O
's	O
GameCube	B-Application
and	O
Microsoft	O
's	O
Xbox	B-Application
.	O
</s>
<s>
The	O
Xbox	B-Application
had	O
the	O
most	O
powerful	O
hardware	O
,	O
while	O
the	O
GameCube	B-Application
was	O
the	O
least	O
expensive	O
console	O
,	O
and	O
Nintendo	O
changed	O
its	O
policy	O
to	O
encourage	O
third-party	O
developers	O
.	O
</s>
<s>
While	O
the	O
PlayStation	B-Device
2	I-Device
theoretically	O
had	O
the	O
weakest	O
specification	O
of	O
the	O
three	O
,	O
it	O
had	O
a	O
head	O
start	O
due	O
to	O
its	O
installed	O
base	O
plus	O
strong	O
developer	O
commitment	O
,	O
as	O
well	O
as	O
a	O
built-in	O
DVD	B-Device
player	I-Device
(	O
the	O
Xbox	B-Application
required	O
an	O
adapter	O
,	O
while	O
the	O
GameCube	B-Application
lacked	O
support	O
entirely	O
)	O
.	O
</s>
<s>
While	O
the	O
PlayStation	B-Device
2	I-Device
's	O
initial	O
games	O
lineup	O
was	O
considered	O
mediocre	O
,	O
this	O
changed	O
during	O
the	O
2001	O
holiday	O
season	O
with	O
the	O
release	O
of	O
several	O
blockbuster	O
games	O
that	O
maintained	O
the	O
PS2	B-Device
's	O
sales	O
momentum	O
and	O
held	O
off	O
its	O
newer	O
rivals	O
.	O
</s>
<s>
Sony	O
also	O
countered	O
the	O
Xbox	B-Application
by	O
securing	O
timed	O
PlayStation	B-Device
2	I-Device
exclusives	O
for	O
highly	O
anticipated	O
games	O
such	O
as	O
the	O
Grand	B-Application
Theft	I-Application
Auto	I-Application
series	O
and	O
Metal	B-Application
Gear	I-Application
Solid	I-Application
2	I-Application
:	I-Application
Sons	I-Application
of	I-Application
Liberty	I-Application
.	O
</s>
<s>
Sony	O
cut	O
the	O
price	O
of	O
the	O
console	O
in	O
May	O
2002	O
from	O
US$299	O
to	O
$199	O
in	O
North	O
America	O
,	O
making	O
it	O
the	O
same	O
price	O
as	O
the	O
GameCube	B-Application
and	O
$100	O
less	O
than	O
the	O
Xbox	B-Application
.	O
</s>
<s>
In	O
2006	O
,	O
Sony	O
cut	O
the	O
cost	O
of	O
the	O
console	O
in	O
anticipation	O
of	O
the	O
release	O
of	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
.	O
</s>
<s>
Unlike	O
Sega	O
's	O
Dreamcast	B-Operating_System
,	O
Sony	O
originally	O
placed	O
little	O
emphasis	O
on	O
online	O
gaming	O
during	O
its	O
first	O
few	O
years	O
,	O
although	O
that	O
changed	O
upon	O
the	O
launch	O
of	O
the	O
online-capable	B-Application
Xbox	I-Application
.	O
</s>
<s>
Coinciding	O
with	O
the	O
release	O
of	O
Xbox	B-Application
Live	I-Application
,	O
Sony	O
released	O
the	O
PlayStation	B-Device
Network	O
Adapter	O
in	O
late	O
2002	O
,	O
with	O
several	O
online	O
first-party	O
titles	O
released	O
alongside	O
it	O
,	O
such	O
as	O
SOCOM	B-Application
U.S.	I-Application
Navy	I-Application
SEALs	I-Application
to	O
demonstrate	O
its	O
active	O
support	O
for	O
Internet	O
play	O
.	O
</s>
<s>
Sony	O
also	O
advertised	O
heavily	O
,	O
and	O
its	O
online	O
model	O
had	O
the	O
support	O
of	O
Electronic	O
Arts	O
(	O
EA	O
)	O
;	O
EA	O
did	O
not	O
offer	O
online	O
Xbox	B-Application
titles	O
until	O
2004	O
.	O
</s>
<s>
Although	O
Sony	O
and	O
Nintendo	O
both	O
started	O
late	O
,	O
and	O
although	O
both	O
followed	O
a	O
decentralized	O
model	O
of	O
online	O
gaming	O
where	O
the	O
responsibility	O
is	O
up	O
to	O
the	O
developer	O
to	O
provide	O
the	O
servers	O
,	O
Sony	O
's	O
moves	O
made	O
online	O
gaming	O
a	O
major	O
selling	O
point	O
of	O
the	O
PS2	B-Device
.	O
</s>
<s>
In	O
September	O
2004	O
,	O
in	O
time	O
for	O
the	O
launch	O
of	O
Grand	B-Application
Theft	I-Application
Auto	I-Application
:	I-Application
San	I-Application
Andreas	I-Application
,	O
Sony	O
revealed	O
a	O
newer	O
,	O
slimmer	O
model	O
of	O
the	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
The	O
issue	O
was	O
compounded	O
in	O
Britain	O
when	O
a	O
Russian	O
oil	O
tanker	O
became	O
stuck	O
in	O
the	O
Suez	O
Canal	O
,	O
blocking	O
a	O
ship	O
from	O
China	O
carrying	O
PS2s	B-Device
bound	O
for	O
the	O
UK	O
.	O
</s>
<s>
In	O
2010	O
,	O
Sony	O
introduced	O
a	O
TV	O
with	O
a	O
built-in	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
continued	O
to	O
be	O
produced	O
until	O
2013	O
when	O
Sony	O
finally	O
announced	O
that	O
it	O
had	O
been	O
discontinued	O
after	O
over	O
twelve	O
years	O
of	O
production	O
—	O
one	O
of	O
the	O
longest	O
lifespans	O
of	O
any	O
video	B-Application
game	I-Application
console	I-Application
.	O
</s>
<s>
New	O
games	O
for	O
the	O
console	O
continued	O
to	O
be	O
made	O
until	O
the	O
end	O
of	O
2013	O
,	O
including	O
Final	B-Protocol
Fantasy	I-Protocol
XI	I-Protocol
:	I-Protocol
Seekers	I-Protocol
of	I-Protocol
Adoulin	I-Protocol
for	O
Japan	O
,	O
and	O
FIFA	B-Application
14	I-Application
for	O
North	O
America	O
.	O
</s>
<s>
The	O
last	O
game	O
to	O
be	O
released	O
on	O
the	O
PlayStation	B-Device
2	I-Device
is	O
Pro	B-Application
Evolution	I-Application
Soccer	I-Application
2014	I-Application
,	O
which	O
was	O
released	O
in	O
the	O
United	O
Kingdom	O
on	O
8	O
November	O
2013	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
's	O
main	O
central	B-General_Concept
processing	I-General_Concept
unit	I-General_Concept
(	O
CPU	O
)	O
is	O
the	O
64-bit	B-Device
R5900-based	O
"	O
Emotion	B-Architecture
Engine	I-Architecture
"	O
,	O
custom-designed	O
by	O
Sony	O
and	O
Toshiba	O
.	O
</s>
<s>
The	O
Emotion	B-Architecture
Engine	I-Architecture
consists	O
of	O
eight	O
separate	O
"	O
units	O
"	O
,	O
each	O
performing	O
a	O
specific	O
task	O
,	O
integrated	O
onto	O
the	O
same	O
die	O
.	O
</s>
<s>
These	O
units	O
include	O
a	O
central	O
CPU	O
core	O
,	O
two	O
Vector	B-Operating_System
Processing	I-Operating_System
Units	I-Operating_System
(	O
VPU	O
)	O
,	O
a	O
10-channel	O
DMA	B-General_Concept
unit	O
,	O
a	O
memory	B-General_Concept
controller	I-General_Concept
,	O
and	O
an	O
Image	O
Processing	O
Unit	O
(	O
IPU	O
)	O
.	O
</s>
<s>
The	O
Emotion	B-Architecture
Engine	I-Architecture
CPU	O
has	O
a	O
clock	O
rate	O
of	O
294.912	O
MHz	O
(	O
299MHz	O
on	O
newer	O
versions	O
)	O
and	O
6,000	O
MIPS	O
,	O
with	O
a	O
floating	O
point	O
performance	O
of	O
6.2	O
GFLOPS	O
.	O
</s>
<s>
The	O
GPU	B-Architecture
is	O
likewise	O
custom-designed	O
for	O
the	O
console	O
,	O
named	O
the	O
"	O
Graphics	O
Synthesiser	O
"	O
.	O
</s>
<s>
It	O
has	O
a	O
fillrate	B-General_Concept
of	O
2.4	O
gigapixels	O
per	O
second	O
,	O
capable	O
of	O
rendering	O
up	O
to	O
75	O
million	O
polygons	O
per	O
second	O
.	O
</s>
<s>
The	O
GPU	B-Architecture
also	O
runs	O
with	O
a	O
clock	O
frequency	O
of	O
147.456MHz	O
(	O
which	O
is	O
half	O
the	O
clock	O
speed	O
of	O
the	O
Emotion	B-Architecture
Engine	I-Architecture
)	O
,	O
4	O
MB	O
of	O
DRAM	O
is	O
capable	O
of	O
transmitting	O
a	O
display	O
output	O
of	O
1280	O
x	O
1024	O
pixels	O
on	O
both	O
PAL	B-Language
and	O
NTSC	O
televisions	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
has	O
a	O
maximum	O
colour	O
depth	O
of	O
16.7million	O
true	O
colours	O
.	O
</s>
<s>
When	O
accounting	O
for	O
features	O
such	O
as	O
lighting	O
,	O
texture	O
mapping	O
,	O
artificial	B-Application
intelligence	I-Application
,	O
and	O
game	O
physics	O
,	O
the	O
console	O
has	O
a	O
real-world	O
performance	O
of	O
25	O
million	O
polygons	O
per	O
second	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
also	O
features	O
two	O
USB	B-Protocol
ports	I-Protocol
,	O
and	O
one	O
IEEE	B-Protocol
1394	I-Protocol
(	O
Firewire	B-Protocol
)	O
port	O
for	O
SCPH-10000	O
to	O
3900x	O
models	O
only	O
.	O
</s>
<s>
A	O
hard	B-Device
disk	I-Device
drive	I-Device
can	O
be	O
installed	O
in	O
an	O
expansion	B-Device
bay	I-Device
on	O
the	O
back	O
of	O
the	O
console	O
,	O
and	O
is	O
required	O
to	O
play	O
certain	O
games	O
,	O
notably	O
the	O
popular	O
Final	B-Protocol
Fantasy	I-Protocol
XI	I-Protocol
.	O
</s>
<s>
Software	O
for	O
the	O
PlayStation	B-Device
2	I-Device
was	O
distributed	O
primarily	O
on	O
DVD-ROMs	O
,	O
with	O
some	O
titles	O
being	O
published	O
on	O
blue-tinted	O
CD-ROM	B-Device
format	O
.	O
</s>
<s>
In	O
addition	O
,	O
the	O
console	O
can	O
play	O
audio	O
CDs	O
and	O
DVD	O
films	O
and	O
is	O
backward-compatible	B-General_Concept
with	O
almost	O
all	O
original	B-Device
PlayStation	I-Device
games	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
also	O
supports	O
PlayStation	B-Device
memory	B-Device
cards	I-Device
and	O
controllers	O
,	O
although	O
original	B-Device
PlayStation	I-Device
memory	B-Device
cards	I-Device
will	O
only	O
work	O
with	O
original	B-Device
PlayStation	I-Device
games	O
and	O
the	O
controllers	O
may	O
not	O
support	O
all	O
functions	O
(	O
such	O
as	O
analogue	O
buttons	O
)	O
for	O
PlayStation	B-Device
2	I-Device
games	I-Device
.	O
</s>
<s>
The	O
standard	O
PlayStation	B-Device
2	I-Device
memory	B-Device
card	I-Device
has	O
an	O
8megabyte	O
(	O
MB	O
)	O
capacity	O
and	O
features	O
MagicGate	O
encryption	O
.	O
</s>
<s>
There	O
are	O
a	O
variety	O
of	O
non-Sony	O
manufactured	O
memory	B-Device
cards	I-Device
available	O
for	O
the	O
PlayStation2	B-Device
,	O
allowing	O
for	O
a	O
memory	O
capacity	O
larger	O
than	O
the	O
standard	O
8MB	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
can	O
natively	O
output	O
video	O
resolutions	O
on	O
SDTV	B-Device
and	O
HDTV	B-Device
from	O
480i	O
to	O
480p	O
,	O
and	O
some	O
games	O
,	O
such	O
as	O
Gran	B-Device
Turismo	I-Device
4	I-Device
and	O
Tourist	B-Application
Trophy	I-Application
,	O
are	O
known	O
to	O
support	O
up-scaled	O
1080i	O
resolution	O
using	O
any	O
of	O
the	O
following	O
standards	O
:	O
composite	O
video	O
[	O
should	O
read	O
component	O
video	O
-	O
the	O
higher	O
resolution	O
RGB	O
connector	O
for	O
video	O
]( 	O
480i	O
)	O
,	O
S-Video	O
(	O
480i	O
)	O
,	O
RGB	O
(	O
480i/p	O
)	O
,	O
VGA	B-Protocol
(	O
for	O
progressive	O
scan	O
games	O
and	O
PS2	B-Device
Linux	I-Device
only	O
)	O
,	O
component	O
[	O
should	O
read	O
composite	O
video	O
-	O
the	O
single	O
,	O
lower	O
resolution	O
yellow	O
connector	O
for	O
video ]	O
video	O
(	O
which	O
display	O
most	O
original	B-Device
PlayStation	I-Device
games	O
in	O
their	O
native	O
240p	O
mode	O
which	O
most	O
HDTV	B-Device
sets	O
do	O
not	O
support	O
)	O
,	O
and	O
D-Terminal	B-Protocol
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
has	O
undergone	O
many	O
revisions	O
,	O
some	O
only	O
of	O
internal	O
construction	O
and	O
others	O
involving	O
substantial	O
external	O
changes	O
.	O
</s>
<s>
The	O
PS2	B-Device
is	O
primarily	O
differentiated	O
between	O
models	O
featuring	O
the	O
original	O
"	O
fat	O
"	O
case	O
design	O
and	O
"	O
slimline	O
"	O
models	O
,	O
which	O
were	O
introduced	O
at	O
the	O
end	O
of	O
2004	O
.	O
</s>
<s>
It	O
was	O
a	O
22	O
"	O
HD-Ready	O
television	O
which	O
incorporated	O
a	O
built-in	O
PlayStation	B-Device
2	I-Device
.	O
</s>
<s>
The	O
PS2	B-Device
standard	O
color	O
is	O
matte	O
black	O
.	O
</s>
<s>
Available	O
in	O
late	O
October	O
2004	O
,	O
it	O
was	O
smaller	O
,	O
thinner	O
,	O
and	O
quieter	O
than	O
the	O
original	O
versions	O
and	O
included	O
a	O
built-in	O
Ethernet	O
port	O
(	O
in	O
some	O
markets	O
it	O
also	O
had	O
an	O
integrated	O
modem	B-Application
)	O
.	O
</s>
<s>
Due	O
to	O
its	O
thinner	O
profile	O
,	O
it	O
did	O
not	O
contain	O
the	O
3.5	O
"	O
expansion	B-Device
bay	I-Device
and	O
therefore	O
did	O
not	O
support	O
the	O
internal	O
hard	B-Device
disk	I-Device
drive	I-Device
.	O
</s>
<s>
It	O
also	O
lacked	O
an	O
internal	O
power	O
supply	O
until	O
a	O
later	O
revision	O
(	O
excluding	O
the	O
Japan	O
version	O
)	O
,	O
similar	O
to	O
the	O
GameCube	B-Application
,	O
and	O
had	O
a	O
modified	O
Multitap	B-Device
expansion	O
.	O
</s>
<s>
The	O
removal	O
of	O
the	O
expansion	B-Device
bay	I-Device
was	O
criticized	O
as	O
a	O
limitation	O
due	O
to	O
the	O
existence	O
of	O
titles	O
such	O
as	O
Final	B-Protocol
Fantasy	I-Protocol
XI	I-Protocol
,	O
which	O
required	O
the	O
HDD	O
use	O
.	O
</s>
<s>
Sony	O
also	O
manufactured	O
a	O
consumer	O
device	O
called	O
the	O
PSX	B-Device
that	O
can	O
be	O
used	O
as	O
a	O
digital	B-Application
video	I-Application
recorder	I-Application
and	O
DVD	O
burner	O
in	O
addition	O
to	O
playing	O
PS2	B-Device
games	I-Device
.	O
</s>
<s>
The	O
device	O
was	O
released	O
in	O
Japan	O
on	O
13	O
December	O
2003	O
,	O
and	O
was	O
the	O
first	O
Sony	O
product	O
to	O
include	O
the	O
XrossMediaBar	B-Device
interface	O
.	O
</s>
<s>
PlayStation	B-Device
2	I-Device
users	O
had	O
the	O
option	O
to	O
play	O
select	O
games	O
over	O
the	O
Internet	O
,	O
using	O
dial-up	O
or	O
a	O
broadband	B-General_Concept
Internet	O
connection	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
Network	I-Device
Adaptor	O
was	O
required	O
for	O
the	O
original	O
models	O
,	O
while	O
the	O
slim	O
models	O
included	O
built-in	O
networking	O
ports	O
.	O
</s>
<s>
Instead	O
of	O
having	O
a	O
unified	O
,	O
subscription-based	O
online	O
service	O
like	O
Xbox	B-Application
Live	I-Application
as	O
competitor	O
Microsoft	O
later	O
chose	O
for	O
its	O
Xbox	B-Application
console	I-Application
,	O
online	O
multiplayer	O
functionality	O
on	O
the	O
PlayStation	B-Device
2	I-Device
was	O
the	O
responsibility	O
of	O
the	O
game	O
publisher	O
and	O
ran	O
on	O
third-party	O
servers	O
.	O
</s>
<s>
Many	O
games	O
that	O
supported	O
online	O
play	O
exclusively	O
supported	O
broadband	B-General_Concept
Internet	O
access	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
's	O
DualShock	B-Device
2	O
controller	O
retains	O
most	O
of	O
the	O
same	O
functionality	O
as	O
its	O
predecessor	O
.	O
</s>
<s>
However	O
,	O
it	O
includes	O
analogue	O
pressure	O
sensitivity	O
to	O
over	O
100	O
individual	O
levels	O
of	O
depth	O
on	O
the	O
face	O
,	O
shoulder	O
and	O
D-pad	O
buttons	O
,	O
replacing	O
the	O
digital	B-General_Concept
buttons	O
of	O
the	O
original	O
.	O
</s>
<s>
Like	O
its	O
predecessor	O
,	O
the	O
DualShock	B-Device
2	O
controller	O
has	O
force	O
feedback	O
,	O
or	O
"	O
vibration	B-Algorithm
"	O
functionality	O
.	O
</s>
<s>
It	O
is	O
lighter	O
and	O
includes	O
two	O
more	O
levels	O
of	O
vibration	B-Algorithm
.	O
</s>
<s>
Specialized	O
controllers	O
include	O
light	B-Device
guns	I-Device
(	O
GunCon	B-Device
)	O
,	O
fishing	O
rod	O
and	O
reel	O
controllers	O
,	O
a	O
Dragon	B-Application
Quest	I-Application
VIII	I-Application
"	O
slime	O
"	O
controller	O
,	O
a	O
Final	B-Application
Fantasy	I-Application
X-2	I-Application
"	O
Tiny	O
Bee	O
"	O
dual	O
pistol	O
controller	O
,	O
an	O
Onimusha	B-Application
3	I-Application
katana	B-Operating_System
controller	O
,	O
and	O
a	O
Resident	B-Application
Evil	I-Application
4	I-Application
chainsaw	O
controller	O
.	O
</s>
<s>
Optional	O
hardware	O
includes	O
additional	O
DualShock	B-Device
or	O
DualShock	B-Device
2	O
controllers	O
,	O
a	O
PS2	B-Device
DVD	O
remote	B-Protocol
control	I-Protocol
,	O
an	O
internal	O
or	O
external	O
hard	B-Device
disk	I-Device
drive	I-Device
(	O
HDD	O
)	O
,	O
a	O
network	O
adapter	O
,	O
horizontal	O
and	O
vertical	O
stands	O
,	O
PlayStation	B-Device
or	O
PS2	B-Device
memory	B-Device
cards	I-Device
,	O
the	O
multitap	B-Device
for	O
PlayStation	B-Device
or	O
PS2	B-Device
,	O
a	O
USB	B-Protocol
motion	O
camera	O
(	O
EyeToy	B-General_Concept
)	O
,	O
a	O
USB	B-Protocol
keyboard	B-Device
and	O
mouse	B-Device
,	O
and	O
a	O
headset	B-Device
.	O
</s>
<s>
The	O
original	O
PS2	B-Device
multitap	B-Device
(	O
SCPH-10090	O
)	O
cannot	O
be	O
plugged	O
into	O
the	O
newer	O
slim	O
models	O
.	O
</s>
<s>
The	O
multitap	B-Device
connects	O
to	O
the	O
memory	B-Device
card	I-Device
slot	I-Device
and	O
the	O
controller	O
slot	O
,	O
and	O
the	O
memory	B-Device
card	I-Device
slot	I-Device
on	O
the	O
slimline	O
is	O
shallower	O
.	O
</s>
<s>
New	O
slim-design	O
multitaps	B-Device
(	O
SCPH-70120	O
)	O
were	O
manufactured	O
for	O
these	O
models	O
;	O
however	O
,	O
third-party	O
adapters	O
also	O
permit	O
original	O
multitaps	B-Device
to	O
be	O
used	O
.	O
</s>
<s>
Early	O
versions	O
of	O
the	O
PS2	B-Device
could	O
be	O
networked	O
via	O
an	O
i.LINK	B-Protocol
port	O
,	O
though	O
this	O
had	O
little	O
game	O
support	O
and	O
was	O
dropped	O
.	O
</s>
<s>
Some	O
third-party	O
manufacturers	O
have	O
created	O
devices	O
that	O
allow	O
disabled	O
people	O
to	O
access	O
the	O
PS2	B-Device
through	O
ordinary	O
switches	O
,	O
etc	O
.	O
</s>
<s>
Some	O
third-party	O
companies	O
,	O
such	O
as	O
JoyTech	O
,	O
have	O
produced	O
LCD	B-Device
monitor	B-Device
and	O
speaker	O
attachments	O
for	O
the	O
PS2	B-Device
,	O
which	O
attach	O
to	O
the	O
back	O
of	O
the	O
console	O
.	O
</s>
<s>
These	O
screens	O
can	O
fold	O
down	O
onto	O
the	O
PS2	B-Device
in	O
a	O
similar	O
fashion	O
to	O
laptop	B-Device
screens	O
.	O
</s>
<s>
There	O
are	O
many	O
accessories	O
for	O
musical	O
games	O
,	O
such	O
as	O
dance	B-Device
pads	I-Device
for	O
Dance	B-Application
Dance	I-Application
Revolution	I-Application
,	O
In	B-Application
the	I-Application
Groove	I-Application
,	O
and	O
Pump	O
It	O
Up	O
titles	O
and	O
High	B-Application
School	I-Application
Musical	I-Application
3	I-Application
:	I-Application
Senior	I-Application
Year	I-Application
Dance	I-Application
.	O
</s>
<s>
Konami	O
microphones	B-Application
for	O
use	O
with	O
the	O
Karaoke	B-Application
Revolution	I-Application
games	O
,	O
dual	O
microphones	B-Application
(	O
sold	O
with	O
and	O
used	O
exclusively	O
for	O
SingStar	B-Device
games	O
)	O
,	O
various	O
"	O
guitar	O
"	O
controllers	O
(	O
for	O
the	O
Guitar	B-Application
Freaks	I-Application
series	O
and	O
Guitar	B-Application
Hero	I-Application
series	I-Application
)	O
,	O
the	O
drum	O
set	O
controller	O
(	O
sold	O
in	O
a	O
box	O
set	O
(	O
or	O
by	O
itself	O
)	O
with	O
a	O
"	O
guitar	O
"	O
controller	O
and	O
a	O
USB	B-Protocol
microphone	B-Application
(	O
for	O
use	O
with	O
Rock	B-Application
Band	I-Application
and	O
Guitar	B-Application
Hero	I-Application
series	I-Application
,	O
World	O
Tour	O
and	O
newer	O
)	O
,	O
and	O
a	O
taiko	O
drum	O
controller	O
for	O
Taiko	O
:	O
Drum	O
Master	O
.	O
</s>
<s>
Unlike	O
the	O
PlayStation	B-Device
,	O
which	O
requires	O
the	O
use	O
of	O
an	O
official	O
Sony	B-Device
PlayStation	I-Device
Mouse	B-Device
to	O
play	O
mouse-compatible	O
games	O
,	O
the	O
few	O
PS2	B-Device
games	I-Device
with	O
mouse	B-Device
support	O
work	O
with	O
a	O
standard	O
USB	B-Protocol
mouse	B-Device
as	O
well	O
as	O
a	O
USB	B-Protocol
trackball	B-Device
.	O
</s>
<s>
In	O
addition	O
,	O
some	O
of	O
these	O
games	O
also	O
support	O
the	O
usage	O
of	O
a	O
USB	B-Protocol
keyboard	B-Device
for	O
text	O
input	O
,	O
game	O
control	O
(	O
instead	O
of	O
a	O
DualShock	B-Device
or	O
DualShock	B-Device
2	O
gamepad	O
,	O
in	O
tandem	O
with	O
a	O
USB	B-Protocol
mouse	B-Device
)	O
,	O
or	O
both	O
.	O
</s>
<s>
PlayStation	B-Device
2	I-Device
software	O
is	O
distributed	O
on	O
CD-ROM	B-Device
and	O
DVD-ROM	O
;	O
the	O
two	O
formats	O
are	O
differentiated	O
by	O
their	O
discs	O
 '	O
bottoms	O
,	O
with	O
CD-ROMs	B-Device
being	O
blue	O
and	O
DVD-ROMs	O
being	O
silver	O
.	O
</s>
<s>
The	O
PlayStation	B-Device
2	I-Device
offered	O
some	O
particularly	O
high-profile	O
exclusive	O
games	O
.	O
</s>
<s>
Most	O
main	O
entries	O
in	O
the	O
Grand	B-Application
Theft	I-Application
Auto	I-Application
,	O
Final	B-Application
Fantasy	I-Application
,	O
and	O
Metal	B-Application
Gear	I-Application
Solid	I-Application
series	I-Application
were	O
released	O
exclusively	O
for	O
the	O
console	O
.	O
</s>
<s>
Several	O
prolific	O
series	O
got	O
their	O
start	O
on	O
the	O
PlayStation	B-Device
2	I-Device
,	O
including	O
God	O
of	O
War	O
,	O
Ratchet	B-Application
&	I-Application
Clank	I-Application
,	O
Jak	B-Application
and	I-Application
Daxter	I-Application
,	O
Devil	B-Application
May	I-Application
Cry	I-Application
,	O
Kingdom	B-Application
Hearts	I-Application
,	O
and	O
Sly	B-Application
Cooper	I-Application
.	O
</s>
<s>
Grand	B-Application
Theft	I-Application
Auto	I-Application
:	I-Application
San	I-Application
Andreas	I-Application
was	O
the	O
best-selling	O
game	O
on	O
the	O
console	O
.	O
</s>
<s>
Game	O
releases	O
peaked	O
in	O
2004	O
,	O
but	O
declined	O
with	O
the	O
release	O
of	O
the	O
PlayStation	B-Operating_System
3	I-Operating_System
in	O
2006	O
.	O
</s>
<s>
The	O
last	O
new	O
games	O
for	O
the	O
console	O
were	O
Final	B-Protocol
Fantasy	I-Protocol
XI	I-Protocol
:	I-Protocol
Seekers	I-Protocol
of	I-Protocol
Adoulin	I-Protocol
in	O
Asia	O
,	O
FIFA	B-Application
14	I-Application
in	O
North	O
America	O
,	O
and	O
Pro	B-Application
Evolution	I-Application
Soccer	I-Application
2014	I-Application
in	O
Europe	O
.	O
</s>
<s>
Initial	O
reviews	O
in	O
2000	O
of	O
the	O
PlayStation	B-Device
2	I-Device
highly	O
acclaimed	O
the	O
console	O
,	O
with	O
reviewers	O
commending	O
its	O
hardware	O
and	O
graphics	O
capabilities	O
,	O
its	O
ability	O
to	O
play	O
DVDs	O
,	O
and	O
the	O
system	O
's	O
backwards	B-General_Concept
compatibility	I-General_Concept
with	O
games	O
and	O
hardware	O
for	O
the	O
original	B-Device
PlayStation	I-Device
.	O
</s>
<s>
Early	O
points	O
of	O
criticism	O
included	O
the	O
lack	O
of	O
online	O
support	O
at	O
the	O
time	O
,	O
its	O
inclusion	O
of	O
only	O
two	O
controller	O
ports	O
,	O
and	O
the	O
system	O
's	O
price	O
at	O
launch	O
compared	O
to	O
the	B-Operating_System
Dreamcast	I-Operating_System
in	O
2000	O
.	O
</s>
<s>
PC	O
Magazine	O
in	O
2001	O
called	O
the	O
console	O
"	O
outstanding	O
"	O
,	O
praising	O
its	O
"	O
noteworthy	O
components	O
"	O
such	O
as	O
the	O
Emotion	B-Architecture
Engine	I-Architecture
CPU	O
,	O
32MB	O
of	O
RAM	O
,	O
support	O
for	O
IEEE	B-Protocol
1394	I-Protocol
(	O
branded	O
as	O
"	O
i.LINK	B-Protocol
"	O
by	O
Sony	O
and	O
"	O
FireWire	B-Protocol
"	O
by	O
Apple	O
)	O
,	O
and	O
the	O
console	O
's	O
two	O
USB	B-Protocol
ports	I-Protocol
while	O
criticizing	O
its	O
"	O
expensive	O
"	O
games	O
and	O
its	O
support	O
for	O
only	O
two	O
controllers	O
without	O
the	O
multitap	B-Device
accessory	O
.	O
</s>
<s>
Later	O
reviews	O
,	O
especially	O
after	O
the	O
launch	O
of	O
the	O
competing	O
GameCube	B-Application
and	O
Xbox	B-Application
systems	O
,	O
continued	O
to	O
praise	O
the	O
PlayStation	B-Device
2	I-Device
's	O
large	O
game	O
library	O
and	O
DVD	O
playback	O
,	O
while	O
routinely	O
criticizing	O
the	O
PlayStation	B-Device
2	I-Device
's	O
lesser	O
graphics	O
performance	O
compared	O
to	O
the	O
newer	O
systems	O
and	O
its	O
rudimentary	O
online	O
service	O
compared	O
to	O
Xbox	B-Application
Live	I-Application
.	O
</s>
<s>
CNET	O
also	O
criticized	O
the	O
DVD	O
playback	O
functionality	O
,	O
claiming	O
that	O
the	O
console	O
's	O
video	O
quality	O
was	O
"	O
passable	O
"	O
and	O
that	O
the	O
playback	O
controls	O
were	O
"	O
rudimentary	O
"	O
,	O
recommending	O
users	O
to	O
purchase	O
a	O
remote	B-Protocol
control	I-Protocol
.	O
</s>
<s>
The	O
console	O
's	O
two	O
controller	O
ports	O
and	O
the	O
high	O
cost	O
of	O
its	O
memory	B-Device
cards	I-Device
were	O
also	O
a	O
point	O
of	O
criticism	O
.	O
</s>
<s>
The	O
slim	O
model	O
of	O
the	O
PlayStation	B-Device
2	I-Device
received	O
positive	O
reviews	O
for	O
its	O
incredibly	O
small	O
size	O
and	O
built-in	O
networking	O
,	O
but	O
received	O
criticism	O
for	O
easily	O
overheating	O
due	O
to	O
exclusion	O
of	O
the	O
original	O
model	O
’s	O
built-in	O
fan	O
.	O
</s>
<s>
Demand	O
for	O
the	O
PlayStation	B-Device
2	I-Device
remained	O
strong	O
throughout	O
much	O
of	O
its	O
lifespan	O
,	O
selling	O
over	O
1.4	O
million	O
units	O
in	O
Japan	O
by	O
31	O
March	O
2000	O
.	O
</s>
<s>
In	O
2005	O
,	O
the	O
PlayStation	B-Device
2	I-Device
became	O
the	O
fastest	O
game	O
console	O
to	O
reach	O
100	O
million	O
units	O
shipped	O
,	O
accomplishing	O
the	O
feat	O
within	O
5	O
years	O
and	O
9	O
months	O
from	O
its	O
launch	O
;	O
this	O
was	O
surpassed	O
4	O
years	O
later	O
when	O
the	O
Nintendo	B-Device
DS	I-Device
reached	O
100	O
million	O
shipments	O
in	O
4	O
years	O
and	O
5	O
months	O
from	O
its	O
launch	O
.	O
</s>
<s>
By	O
July	O
2009	O
,	O
the	O
system	O
had	O
sold	O
138.8	O
million	O
units	O
worldwide	O
,	O
with	O
51	O
million	O
of	O
those	O
units	O
sold	O
in	O
PAL	B-Language
regions	O
.	O
</s>
<s>
Overall	O
,	O
over	O
155	O
million	O
PlayStation	B-Device
2	I-Device
units	O
were	O
sold	O
worldwide	O
by	O
31	O
March	O
2012	O
,	O
the	O
year	O
Sony	O
officially	O
stopped	O
supplying	O
updated	O
sales	O
numbers	O
of	O
the	O
system	O
.	O
</s>
<s>
Using	O
homebrew	O
programs	O
,	O
it	O
is	O
possible	O
to	O
play	O
various	O
audio	O
and	O
video	O
file	O
formats	O
on	O
a	O
PS2	B-Device
.	O
</s>
<s>
Homebrew	O
programs	O
can	O
also	O
play	O
patched	O
backups	O
of	O
original	O
PS2	B-Device
DVD	O
games	O
on	O
unmodified	O
consoles	O
and	O
install	O
retail	O
discs	O
to	O
an	O
installed	O
hard	B-Device
drive	I-Device
on	O
older	O
models	O
.	O
</s>
<s>
Homebrew	O
emulators	O
of	O
older	O
computer	O
and	O
gaming	O
systems	O
have	O
been	O
developed	O
for	O
the	O
PS2	B-Device
.	O
</s>
<s>
Sony	O
released	O
a	O
Linux-based	O
operating	O
system	O
,	O
Linux	B-Device
for	I-Device
PlayStation	I-Device
2	I-Device
,	O
for	O
the	O
PS2	B-Device
in	O
a	O
package	O
that	O
also	O
includes	O
a	O
keyboard	B-Device
,	O
mouse	B-Device
,	O
Ethernet	O
adapter	O
and	O
HDD	O
.	O
</s>
<s>
In	O
Europe	O
and	O
Australia	O
,	O
the	O
PS2	B-Device
comes	O
with	O
a	O
free	O
Yabasic	B-Language
interpreter	I-Language
on	O
the	O
bundled	O
demo	O
disc	O
.	O
</s>
<s>
This	O
allows	O
users	O
to	O
create	O
simple	O
programs	O
for	O
the	O
PS2	B-Device
.	O
</s>
<s>
A	O
port	O
of	O
the	O
NetBSD	B-Device
project	O
and	O
BlackRhino	O
GNU/Linux	B-Application
,	O
an	O
alternative	O
Debian-based	O
distribution	O
,	O
are	O
also	O
available	O
for	O
the	O
PS2	B-Device
.	O
</s>
<s>
The	O
PlayStation	B-Operating_System
3	I-Operating_System
was	O
released	O
in	O
Japan	O
and	O
North	O
America	O
in	O
November	O
2006	O
and	O
Europe	O
in	O
March	O
2007	O
.	O
</s>
