<s>
Rock	B-Application
Band	I-Application
is	O
a	O
music	B-Application
video	I-Application
game	I-Application
released	O
for	O
the	O
iOS	B-Operating_System
.	O
</s>
<s>
The	O
game	O
was	O
released	O
as	O
a	O
part	O
of	O
the	O
Rock	B-Application
Band	I-Application
series	O
for	O
download	O
through	O
the	O
App	B-Application
Store	I-Application
in	O
several	O
regions	O
on	O
October	O
19	O
,	O
2009	O
.	O
</s>
<s>
On	O
May	O
2	O
,	O
2012	O
,	O
RockBandAide	O
announced	O
that	O
EA	O
intended	O
to	O
discontinue	O
Rock	B-Application
Band	I-Application
with	O
servers	O
being	O
disconnected	O
and	O
support	O
being	O
dropped	O
on	O
May	O
31	O
,	O
2012	O
.	O
</s>
<s>
It	O
was	O
later	O
announced	O
that	O
due	O
to	O
an	O
expiring	O
contract	O
with	O
Harmonix	O
the	O
game	O
would	O
be	O
removed	O
from	O
the	O
App	B-Application
Store	I-Application
.	O
</s>
<s>
Gameplay	O
is	O
similar	O
to	O
other	O
Rock	B-Application
Band	I-Application
series	O
games	O
,	O
but	O
controlled	O
without	O
instrument	O
controllers	O
,	O
and	O
instead	O
with	O
the	O
iOS-device	O
'	O
s	O
multi-touch	B-Application
display	O
and	O
built-in	O
accelerometer	O
.	O
</s>
<s>
The	O
game	O
features	O
multiplayer	O
support	O
over	O
Bluetooth	B-Protocol
,	O
and	O
online	O
play	O
via	O
Facebook	O
Connect	O
.	O
</s>
<s>
A	O
total	O
of	O
twenty	O
songs	O
appear	O
in	O
the	O
game	O
,	O
and	O
extra	O
songs	O
are	O
available	O
as	O
purchasable	O
,	O
downloadable	B-Protocol
content	I-Protocol
.	O
</s>
<s>
Gameplay	O
is	O
similar	O
to	O
that	O
of	O
previous	O
games	O
in	O
the	O
Rock	B-Application
Band	I-Application
series	O
,	O
as	O
the	O
player	O
has	O
a	O
choice	O
to	O
play	O
either	O
lead	O
,	O
bass	O
guitar	O
,	O
drums	O
,	O
or	O
vocals	O
with	O
up	O
to	O
three	O
other	O
players	O
locally	O
via	O
an	O
ad	O
hoc	O
Bluetooth	B-Protocol
network	O
.	O
</s>
<s>
Simultaneous	O
multiplayer	O
gameplay	O
is	O
not	O
available	O
on	O
the	O
original	O
iPhone	B-Device
and	O
iPod	B-Device
Touch	I-Device
devices	O
due	O
to	O
technical	O
limitations	O
of	O
the	O
iPhone	B-Operating_System
OS	I-Operating_System
.	O
</s>
<s>
In	O
place	O
of	O
instrument	O
controllers	O
as	O
used	O
in	O
most	O
other	O
games	O
of	O
the	O
series	O
,	O
Rock	B-Application
Band	I-Application
must	O
be	O
controlled	O
using	O
a	O
combination	O
of	O
the	O
iPhone	B-Device
or	O
iPod	B-Device
Touch	I-Device
device	O
's	O
built-in	O
multi-touch	B-Application
display	O
and	O
accelerometer	O
.	O
</s>
<s>
It	O
is	O
activated	O
by	O
jolting	O
the	O
iOS	B-Operating_System
device	O
,	O
whereas	O
force	B-Device
feedback	I-Device
is	O
produced	O
by	O
the	O
device	O
to	O
confirm	O
activation	O
.	O
</s>
<s>
Three	O
skill	O
levels	O
are	O
available	O
in	O
Rock	B-Application
Band	I-Application
,	O
and	O
are	O
known	O
as	O
"	O
Easy	O
"	O
,	O
"	O
Medium	O
"	O
,	O
and	O
"	O
Hard	O
"	O
.	O
</s>
<s>
There	O
are	O
twenty	O
songs	O
available	O
by	O
default	O
on	O
Rock	B-Application
Band	I-Application
.	O
</s>
<s>
Players	O
are	O
able	O
to	O
download	O
additional	O
songs	O
in	O
the	O
in-game	O
"	O
Music	B-Application
Store	O
"	O
,	O
which	O
is	O
available	O
using	O
Wi-Fi	O
or	O
a	O
cellular	O
data	O
connection	O
to	O
the	O
internet	O
.	O
</s>
<s>
These	O
songs	O
were	O
either	O
on	O
previous	O
Rock	B-Application
Band	I-Application
games	O
or	O
Downloadable	B-Protocol
Content	I-Protocol
.	O
</s>
<s>
Rock	B-Application
Band	I-Application
received	O
mixed	O
reviews	O
from	O
critics	O
.	O
</s>
<s>
As	O
compared	O
to	O
the	O
other	O
portable	O
variant	O
of	O
the	O
franchise	O
Rock	B-Application
Band	I-Application
Unplugged	I-Application
,	O
it	O
was	O
considered	O
on	O
par	O
and	O
similar	O
in	O
gameplay	O
.	O
</s>
<s>
Rock	B-Operating_System
Band	I-Operating_System
Reloaded	I-Operating_System
was	O
released	O
for	O
the	O
iPhone/iPod	O
Touch	O
and	O
iPad	B-Device
on	O
December	O
2	O
,	O
2010	O
.	O
</s>
