<s>
Game	B-Device
Room	I-Device
was	O
a	O
social	O
gaming	O
service	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
video	O
game	O
system	O
,	O
Microsoft	B-Application
Windows	I-Application
PCs	B-Device
,	O
and	O
Windows	B-Application
Phone	O
7	O
.	O
</s>
<s>
Launched	O
on	O
March	O
24	O
,	O
2010	O
,	O
Game	B-Device
Room	I-Device
let	O
players	O
download	O
classic	O
video	O
games	O
and	O
compete	O
against	O
each	O
other	O
for	O
high	O
scores	O
.	O
</s>
<s>
Players	O
on	O
both	O
Xbox	B-Operating_System
360	I-Operating_System
and	O
Windows	B-Application
PCs	I-Application
could	O
access	O
Game	B-Device
Room	I-Device
through	O
their	O
respective	O
versions	O
of	O
Microsoft	O
's	O
Live	O
online	O
services	O
(	O
Xbox	B-Application
Live	I-Application
and	O
Games	B-Application
for	I-Application
Windows	I-Application
–	I-Application
Live	I-Application
)	O
.	O
</s>
<s>
At	O
the	O
2011	O
Consumer	O
Electronics	O
Show	O
,	O
Microsoft	O
announced	O
a	O
mobile	O
version	O
of	O
Game	B-Device
Room	I-Device
for	O
Windows	B-Application
Phone	O
7	O
.	O
</s>
<s>
Asteroids	B-Application
Deluxe	I-Application
was	O
the	O
only	O
game	O
announced	O
,	O
but	O
a	O
show	O
floor	O
demo	O
revealed	O
working	O
prototypes	O
of	O
Centipede	B-Application
and	O
Shao-Lin	B-Application
'	I-Application
s	I-Application
Road	I-Application
.	O
</s>
<s>
The	O
Game	B-Device
Room	I-Device
front	O
end	O
can	O
be	O
downloaded	O
at	O
no	O
charge	O
from	O
Microsoft	O
's	O
Marketplace	O
online	O
storefront	O
.	O
</s>
<s>
Games	O
for	O
Game	B-Device
Room	I-Device
are	O
made	O
available	O
through	O
downloadable	O
game	O
packs	O
.	O
</s>
<s>
Previously	O
,	O
this	O
was	O
limited	O
to	O
Xbox	B-Operating_System
360	I-Operating_System
or	O
Games	B-Application
for	I-Application
Windows	I-Application
,	O
but	O
a	O
late	O
update	O
removed	O
this	O
distinction	O
,	O
defaulting	O
the	O
game	O
purchases	O
to	O
the	O
previous	O
"	O
Play	O
Anywhere	O
"	O
model	O
(	O
a	O
multiplatform	O
spending	O
model	O
that	O
would	O
be	O
expanded	O
years	O
later	O
for	O
Xbox	B-Device
One	I-Device
and	O
Windows	B-Operating_System
10	I-Operating_System
as	O
Xbox	B-Device
Play	O
Anywhere	O
)	O
.	O
</s>
<s>
Games	O
in	O
Game	B-Device
Room	I-Device
are	O
launched	O
by	O
selecting	O
them	O
while	O
players	O
browse	O
through	O
their	O
arcade	O
.	O
</s>
<s>
Both	O
are	O
accessible	O
using	O
Game	B-Device
Room	I-Device
's	O
on-screen	O
interfaces	O
.	O
</s>
<s>
Also	O
,	O
some	O
games	O
can	O
be	O
played	O
in	O
a	O
special	O
"	O
ranked	O
mode	O
,	O
"	O
which	O
allows	O
scores	O
to	O
be	O
posted	O
to	O
online	O
leaderboards	O
while	O
limiting	O
gameplay	O
options	O
to	O
a	O
single	O
variation	O
common	O
to	O
all	O
players	O
,	O
as	O
well	O
as	O
disallowing	O
several	O
Game	B-Device
Room	I-Device
options	O
,	O
seemingly	O
to	O
prevent	O
falsifying	O
rankings	O
or	O
other	O
forms	O
of	O
cheating	O
.	O
</s>
<s>
While	O
browsing	O
their	O
arcades	O
,	O
players	O
see	O
avatars	B-Device
of	O
themselves	O
and	O
their	O
online	O
friends	O
wandering	O
around	O
and	O
playing	O
the	O
games	O
;	O
Xbox	B-Operating_System
360	I-Operating_System
players	O
see	O
their	O
console	O
avatars	B-Device
,	O
while	O
PC	O
players	O
see	O
generic	O
avatars	B-Device
instead	O
.	O
</s>
<s>
The	O
initial	O
game	O
pack	O
releases	O
for	O
Game	B-Device
Room	I-Device
were	O
a	O
mix	O
of	O
arcade	O
,	O
Intellivision	B-Operating_System
,	O
and	O
Atari	B-General_Concept
2600	I-General_Concept
games	O
.	O
</s>
<s>
Along	O
with	O
the	O
several	O
pre-loaded	O
themes	O
available	O
at	O
the	O
start	O
in	O
Game	B-Device
Room	I-Device
,	O
Microsoft	O
has	O
added	O
other	O
themes	O
in	O
the	O
game	O
packs	O
.	O
</s>
