<s>
Game	B-Operating_System
Center	I-Operating_System
is	O
a	O
service	O
by	O
Apple	O
that	O
allows	O
users	O
to	O
play	O
and	O
challenge	O
friends	O
when	O
playing	O
online	O
multiplayer	O
social	O
gaming	O
network	O
games	O
.	O
</s>
<s>
Games	O
can	O
now	O
share	O
multiplayer	O
functionality	O
between	O
the	O
Mac	O
and	O
iOS	B-Application
versions	O
of	O
the	O
app	O
.	O
</s>
<s>
Game	B-Operating_System
Center	I-Operating_System
can	O
be	O
implemented	O
by	O
developers	O
as	O
of	O
iOS	O
4.1	O
or	O
later	O
,	O
and	O
macOS	B-Operating_System
10.12	I-Operating_System
or	O
later	O
,	O
through	O
the	O
GameKit	O
framework	O
.	O
</s>
<s>
Game	B-Operating_System
Center	I-Operating_System
is	O
available	O
on	O
iPod	B-Device
Touch	I-Device
2nd	O
generation	O
and	O
later	O
(	O
iOS	O
4.1	O
or	O
higher	O
required	O
)	O
;	O
iPhone	B-Operating_System
3GS	I-Operating_System
and	O
later	O
(	O
iOS	O
4.1	O
or	O
higher	O
required	O
)	O
;	O
all	O
models	O
of	O
the	O
iPad	B-Device
(	O
iOS	O
4.2	O
or	O
higher	O
required	O
)	O
;	O
Mac	O
computers	O
running	O
macOS	B-Operating_System
10.12	I-Operating_System
Sierra	I-Operating_System
or	O
later	O
,	O
Apple	B-Device
TV	I-Device
4	I-Device
running	O
tvOS	B-Operating_System
,	O
and	O
Apple	B-Device
Watch	I-Device
running	O
watchOS	B-Device
3	O
.	O
</s>
<s>
Gaming	O
became	O
a	O
significant	O
part	O
of	O
the	O
iOS	B-Application
platform	O
when	O
Apple	O
launched	O
the	O
App	B-Application
Store	I-Application
on	O
July	O
10	O
,	O
2008	O
.	O
</s>
<s>
This	O
gap	O
was	O
soon	O
filled	O
by	O
third	O
parties	O
,	O
such	O
as	O
OpenFeint	B-Application
,	O
Plus	B-Operating_System
,	O
AGON	O
Online	O
,	O
and	O
Scoreloop	B-Application
.	O
</s>
<s>
Game	B-Operating_System
Center	I-Operating_System
was	O
announced	O
during	O
an	O
iOS	B-Operating_System
4	I-Operating_System
preview	O
event	O
hosted	O
by	O
Apple	O
on	O
April	O
8	O
,	O
2010	O
.	O
</s>
<s>
It	O
was	O
released	O
on	O
September	O
8	O
,	O
2010	O
with	O
iOS	O
4.1	O
on	O
iPhone	B-Operating_System
4	I-Operating_System
,	O
iPhone	B-Operating_System
3GS	I-Operating_System
,	O
and	O
iPod	B-Device
Touch	I-Device
2nd	O
generation	O
through	O
4th	O
generation	O
,	O
and	O
is	O
included	O
with	O
iOS	O
4.2	O
or	O
later	O
on	O
the	O
iPad	B-Device
.	O
</s>
<s>
An	O
updated	O
version	O
of	O
Game	B-Operating_System
Center	I-Operating_System
was	O
released	O
with	O
iOS	B-Application
5	O
that	O
featured	O
the	O
addition	O
of	O
turn-based	O
gaming	O
,	O
player	O
photos	O
,	O
friend	O
suggestions	O
,	O
and	O
achievement	O
points	O
.	O
</s>
<s>
The	O
iOS	B-Application
6	O
update	O
added	O
Challenges	O
,	O
a	O
way	O
for	O
players	O
to	O
challenge	O
other	O
players	O
to	O
beat	O
leaderboard	O
scores	O
or	O
earn	O
achievements	O
.	O
</s>
<s>
On	O
June	O
13	O
,	O
2016	O
,	O
the	O
application	O
was	O
removed	O
from	O
iOS	B-Operating_System
10	I-Operating_System
and	O
macOS	B-Operating_System
Sierra	I-Operating_System
;	O
however	O
,	O
the	O
service	O
still	O
exists	O
,	O
and	O
users	O
now	O
manage	O
their	O
Game	B-Operating_System
Center	I-Operating_System
profile	O
from	O
within	O
the	O
Settings	O
app	O
.	O
</s>
<s>
On	O
June	O
24	O
,	O
2020	O
,	O
Game	B-Operating_System
Center	I-Operating_System
returned	O
and	O
was	O
refreshed	O
and	O
redesigned	O
in	O
iOS	B-Operating_System
14	I-Operating_System
,	O
iPadOS	B-Operating_System
14	I-Operating_System
and	O
macOS	B-Operating_System
Big	I-Operating_System
Sur	I-Operating_System
.	O
</s>
<s>
On	O
July	O
14	O
,	O
2021	O
,	O
a	O
Game	B-Operating_System
Center	I-Operating_System
widget	O
was	O
introduced	O
in	O
different	O
sizes	O
in	O
iOS	B-Operating_System
15	I-Operating_System
,	O
iPadOS	B-Operating_System
15	I-Operating_System
and	O
macOS	B-Device
Monterey	I-Device
.	O
</s>
<s>
From	O
within	O
Game	B-Operating_System
Center	I-Operating_System
,	O
players	O
can	O
connect	O
with	O
friends	O
,	O
send	O
friend	O
requests	O
,	O
start	O
playing	O
games	O
and	O
organize	O
online	O
multiplayer	O
games	O
.	O
</s>
<s>
The	O
number	O
of	O
friends	O
that	O
can	O
be	O
connected	O
to	O
a	O
single	O
Game	B-Operating_System
Center	I-Operating_System
account	O
is	O
limited	O
to	O
500	O
.	O
</s>
<s>
Many	O
iOS	B-Application
games	O
use	O
Game	B-Operating_System
Center	I-Operating_System
,	O
but	O
not	O
all	O
of	O
them	O
use	O
every	O
feature	O
.	O
</s>
<s>
Apps	O
can	O
choose	O
to	O
include	O
any	O
or	O
all	O
of	O
the	O
following	O
features	O
supported	O
by	O
Game	B-Operating_System
Center	I-Operating_System
:	O
</s>
<s>
Achievements	O
–	O
Points	O
are	O
awarded	O
to	O
players	O
as	O
a	O
part	O
of	O
Game	B-Operating_System
Center	I-Operating_System
's	O
achievement	O
tracking	O
system	O
.	O
</s>
