<s>
is	O
a	O
2011	O
twin-stick	O
shooter	O
video	O
game	O
developed	O
and	O
published	O
by	O
Namco	O
Bandai	O
Games	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
and	O
PlayStation	B-Operating_System
3	I-Operating_System
.	O
</s>
<s>
It	O
is	O
the	O
sequel	O
to	O
Galaga	B-Application
Legions	I-Application
(	O
2008	O
)	O
,	O
and	O
is	O
the	O
fourteenth	O
entry	O
in	O
the	O
Galaxian	B-Application
series	O
.	O
</s>
<s>
The	O
player	O
controls	O
the	O
AEf-7	O
"	O
Blowneedle	O
"	O
starship	O
in	O
its	O
efforts	O
to	O
wipe	O
out	O
the	O
Galaga	B-Application
forces	O
before	O
they	O
destroy	O
all	O
of	O
mankind	O
.	O
</s>
<s>
The	O
game	O
was	O
developed	O
by	O
the	O
same	O
team	O
behind	O
Pac-Man	B-Application
Championship	I-Application
Edition	I-Application
DX	I-Application
,	O
headed	O
by	O
director	O
Tadashi	O
Iguchi	O
and	O
producer	O
Toshiko	O
Tamura	O
.	O
</s>
<s>
The	O
team	O
focused	O
heavily	O
on	O
high-score	O
battles	O
as	O
a	O
callback	O
to	O
video	O
game	O
tournaments	O
from	O
the	O
early	O
1980s	O
,	O
and	O
to	O
appeal	O
towards	O
both	O
veterans	O
and	O
newcomers	O
to	O
the	O
Galaxian	B-Application
series	O
.	O
</s>
<s>
It	O
was	O
the	O
second	O
game	O
released	O
under	O
the	O
Namco	O
Generations	O
label	O
,	O
and	O
was	O
made	O
to	O
coincide	O
with	O
the	O
30th	O
anniversary	O
of	O
the	O
original	O
Galaga	B-Application
arcade	O
game	O
.	O
</s>
<s>
Upon	O
release	O
,	O
Galaga	B-Application
Legions	I-Application
DX	I-Application
was	O
met	O
with	O
mostly	O
favorable	O
reviews	O
from	O
critics	O
.	O
</s>
<s>
A	O
Windows	B-Protocol
Phone	I-Protocol
version	O
of	O
the	O
game	O
was	O
released	O
in	O
2012	O
.	O
</s>
<s>
The	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
version	O
was	O
made	O
available	O
on	O
the	B-Device
Xbox	I-Device
One	I-Device
in	O
2016	O
as	O
part	O
of	O
the	O
system	O
's	O
backwards	O
compatibility	O
lineup	O
.	O
</s>
<s>
In	O
Galaga	B-Application
Legions	I-Application
DX	I-Application
,	O
players	O
control	O
a	O
starship	O
named	O
the	O
AEf-7	O
Blowneedle	O
in	O
its	O
mission	O
to	O
eradicate	O
the	O
hostile	O
Galaga	B-Application
forces	O
.	O
</s>
<s>
Gameplay	O
of	O
Legions	O
DX	O
has	O
been	O
compared	O
to	O
similar	O
twin-stick	O
shooters	O
such	O
as	O
Geometry	B-Application
Wars	I-Application
.	O
</s>
<s>
Many	O
of	O
these	O
replace	O
the	O
Blowneedle	O
and	O
enemies	O
with	O
sprites	O
from	O
other	O
Galaxian	B-Application
games	O
,	O
alongside	O
those	O
from	O
other	O
older	O
Namco	O
games	O
including	O
Pac-Man	B-Application
,	O
Mappy	B-Application
,	O
Dig	B-Application
Dug	I-Application
,	O
and	O
Rally-X	B-Application
.	O
</s>
<s>
After	O
completing	O
work	O
on	O
Pac-Man	B-Application
Championship	I-Application
Edition	I-Application
DX	I-Application
(	O
2010	O
)	O
,	O
Namco	O
Bandai	O
Games	O
director	O
Tadashi	O
Iguchi	O
began	O
drafting	O
plans	O
for	O
a	O
sequel	O
to	O
one	O
of	O
his	O
previous	O
projects	O
,	O
Galaga	B-Application
Legions	I-Application
(	O
2008	O
)	O
.	O
</s>
<s>
Originally	O
released	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
,	O
Legions	O
was	O
a	O
modernized	O
update	O
to	O
Namco	O
's	O
Galaxian	B-Application
series	O
of	O
shoot	O
'	O
em	O
ups	O
.	O
</s>
<s>
While	O
the	O
game	O
sold	O
well	O
and	O
was	O
received	O
favorably	O
by	O
publications	O
,	O
a	O
common	O
complaint	O
was	O
its	O
drastic	O
departure	O
from	O
the	O
gameplay	O
of	O
the	O
original	O
Galaxian	B-Application
and	O
Galaga	B-Application
,	O
both	O
of	O
which	O
were	O
fixed	O
overhead	O
shooters	O
.	O
</s>
<s>
Iguchi	O
directed	O
development	O
of	O
Galaga	B-Application
Legions	I-Application
DX	I-Application
.	O
</s>
<s>
The	O
majority	O
of	O
the	O
developers	O
behind	O
Pac-Man	B-Application
Championship	I-Application
Edition	I-Application
DX	I-Application
assisted	O
him	O
in	O
production	O
,	O
such	O
as	O
producer	O
Toshiko	O
Tamura	O
.	O
</s>
<s>
With	O
the	O
original	O
Galaga	B-Application
Legions	I-Application
,	O
Iguchi	O
felt	O
that	O
it	O
trying	O
to	O
be	O
original	O
instead	O
distanced	O
it	O
from	O
previous	O
Galaxian	B-Application
games	O
,	O
resulting	O
in	O
a	O
niche	O
target	O
audience	O
.	O
</s>
<s>
Iguchi	O
's	O
experience	O
with	O
developing	O
Pac-Man	B-Application
Championship	I-Application
Edition	I-Application
DX	I-Application
,	O
a	O
well-received	O
update	O
to	O
the	O
original	O
Pac-Man	B-Application
,	O
provided	O
him	O
with	O
a	O
basic	O
idea	O
of	O
how	O
Galaga	B-Application
Legions	I-Application
DX	I-Application
should	O
be	O
designed	O
.	O
</s>
<s>
Like	O
Pac-Man	B-Application
Championship	I-Application
Edition	I-Application
DX	I-Application
,	O
the	O
development	O
team	O
hoped	O
to	O
make	O
the	O
game	O
"	O
more	O
exhilarating	O
and	O
satisfying	O
"	O
than	O
before	O
,	O
and	O
to	O
feel	O
like	O
a	O
proper	O
evolution	O
of	O
its	O
arcade	O
game	O
predecessors	O
.	O
</s>
<s>
Composer	O
Akihiko	O
Ishikawa	O
,	O
whose	O
works	O
include	O
Ninja	B-Application
Assault	I-Application
and	O
The	B-Application
Idolmaster	I-Application
series	O
,	O
scored	O
the	O
soundtrack	O
.	O
</s>
<s>
Namco	O
Bandai	O
Games	O
teased	O
Galaga	B-Application
Legions	I-Application
DX	I-Application
on	O
November	O
16	O
,	O
2010	O
.	O
</s>
<s>
The	O
company	O
revealed	O
that	O
the	O
game	O
would	O
be	O
the	O
second	O
title	O
released	O
under	O
its	O
Namco	O
Generations	O
series	O
of	O
classic	O
game	O
updates	O
,	O
which	O
included	O
Pac-Man	B-Application
Championship	I-Application
Edition	I-Application
DX	I-Application
and	O
the	O
later-cancelled	O
Aero-Cross	B-Device
.	O
</s>
<s>
Namco	O
Bandai	O
released	O
a	O
teaser	O
trailer	O
in	O
April	O
2011	O
,	O
where	O
it	O
announced	O
the	O
game	O
would	O
coincide	O
with	O
the	O
30th	O
anniversary	O
of	O
the	O
original	O
Galaga	B-Application
.	O
</s>
<s>
Galaga	B-Application
Legions	I-Application
DX	I-Application
was	O
released	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
on	O
June	O
29	O
,	O
2011	O
worldwide	O
through	O
the	O
Xbox	B-Application
Live	I-Application
service	O
.	O
</s>
<s>
The	O
PlayStation	B-Operating_System
3	I-Operating_System
version	O
was	O
released	O
for	O
the	O
PlayStation	B-Device
Network	I-Device
on	O
August	O
3	O
,	O
2011	O
in	O
North	O
America	O
and	O
Japan	O
,	O
and	O
on	O
August	O
10	O
in	O
Europe	O
.	O
</s>
<s>
To	O
commemorate	O
its	O
release	O
,	O
an	O
update	O
for	O
both	O
Taiko	B-Application
no	I-Application
Tatsujin	I-Application
14	I-Application
and	O
Taiko	B-Application
no	I-Application
Tatsujin	I-Application
Plus	I-Application
included	O
one	O
of	O
the	O
game	O
's	O
songs	O
,	O
"	O
Doom	O
Noiz	O
"	O
,	O
as	O
a	O
playable	O
track	O
.	O
</s>
<s>
A	O
version	O
for	O
Windows	B-Protocol
Phone	I-Protocol
was	O
released	O
on	O
September	O
4	O
,	O
2012	O
,	O
which	O
uses	O
touch-screen	O
thumbsticks	O
for	O
movement	O
.	O
</s>
<s>
On	O
April	O
27	O
,	O
2016	O
,	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
version	O
of	O
Galaga	B-Application
Legions	I-Application
DX	I-Application
was	O
re-released	O
through	O
Xbox	B-Device
One	I-Device
's	O
backwards	O
comparability	O
lineup	O
.	O
</s>
<s>
By	O
the	O
end	O
of	O
2011	O
,	O
Galaga	B-Application
Legions	I-Application
DX	I-Application
sold	O
19,755	O
units	O
on	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
,	O
significantly	O
less	O
than	O
its	O
predecessor	O
.	O
</s>
<s>
Carolyn	O
Petit	O
of	O
GameSpot	O
called	O
it	O
"	O
a	O
worthy	O
bearer	O
of	O
the	O
Galaga	B-Application
title	O
"	O
,	O
applauding	O
the	O
game	O
's	O
lowered	O
difficulty	O
,	O
graphical	O
style	O
and	O
addictive	O
gameplay	O
.	O
</s>
<s>
Hatfield	O
was	O
the	O
most	O
critical	O
,	O
saying	O
that	O
the	O
game	O
's	O
content	O
left	O
with	O
little	O
to	O
offer	O
for	O
its	O
price	O
point	O
,	O
expressing	O
disappointment	O
towards	O
its	O
lack	O
of	O
replay	O
value	O
and	O
for	O
bearing	O
little	O
resemblance	O
to	O
the	O
original	O
Galaga	B-Application
.	O
</s>
<s>
He	O
went	O
on	O
to	O
say	O
the	O
game	O
was	O
not	O
much	O
of	O
an	O
improvement	O
over	O
the	O
first	O
Galaga	B-Application
Legions	I-Application
and	O
that	O
only	O
one	O
playthrough	O
showed	O
off	O
all	O
it	O
has	O
to	O
offer	O
.	O
</s>
<s>
Barker	O
stated	O
it	O
was	O
not	O
as	O
refined	O
as	O
Pac-Man	B-Application
Championship	I-Application
Edition	I-Application
DX	I-Application
and	O
disliked	O
its	O
large	O
emphasis	O
on	O
pattern	O
memorization	O
,	O
saying	O
that	O
it	O
led	O
to	O
repetition	O
,	O
while	O
Wolinsky	O
criticized	O
the	O
game	O
's	O
lack	O
of	O
extra	O
content	O
.	O
</s>
