<s>
Space	B-Application
Invaders	I-Application
Infinity	I-Application
Gene	I-Application
is	O
a	O
shoot	O
'	O
em	O
up	O
game	O
released	O
as	O
part	O
of	O
the	O
Space	B-Application
Invaders	I-Application
franchise	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
for	O
iOS	B-Operating_System
on	O
July	O
27	O
,	O
2009	O
,	O
after	O
first	O
appearing	O
on	O
Japanese	O
mobile	O
phones	O
,	O
and	O
was	O
later	O
released	O
for	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
and	O
PlayStation	B-Device
Network	I-Device
in	O
September	O
2010	O
,	O
and	O
for	O
Android	B-Application
in	O
September	O
2011	O
.	O
</s>
<s>
The	O
game	O
begins	O
with	O
the	O
classic	O
appearance	O
of	O
the	O
original	O
Space	B-Application
Invaders	I-Application
.	O
</s>
<s>
The	O
XBLA	B-Device
and	O
PSN	B-Device
versions	O
have	O
several	O
additional	O
features	O
from	O
the	O
iOS	B-Operating_System
version	O
,	O
including	O
HD	O
support	O
and	O
added	O
weapon	O
types	O
.	O
</s>
<s>
Space	B-Application
Invaders	I-Application
Infinity	I-Application
Gene	I-Application
was	O
developed	O
by	O
Taito	O
,	O
with	O
Reisuke	O
Ishida	O
as	O
the	O
director	O
.	O
</s>
<s>
Following	O
the	O
30th	O
anniversary	O
of	O
the	O
original	O
game	O
,	O
Taito	O
challenged	O
its	O
employees	O
to	O
reinvent	O
Space	B-Application
Invaders	I-Application
.	O
</s>
<s>
Ishida	O
—	O
a	O
fan	O
of	O
the	O
Space	B-Application
Invaders	I-Application
series	O
and	O
shooting	O
games	O
—	O
had	O
primarily	O
worked	O
on	O
Taito	O
mobile	O
phone	O
games	O
,	O
such	O
as	O
Trance	O
Pinball	O
,	O
a	O
pinball	O
game	O
with	O
musical	O
elements	O
.	O
</s>
<s>
Realizing	O
that	O
younger	O
generations	O
may	O
be	O
familiar	O
with	O
the	O
characters	O
but	O
not	O
the	O
gameplay	O
,	O
Ishida	O
wanted	O
to	O
convey	O
the	O
evolution	O
of	O
Space	B-Application
Invaders	I-Application
and	O
made	O
that	O
the	O
game	O
's	O
theme	O
.	O
</s>
<s>
In	O
designing	O
the	O
gameplay	O
,	O
Ishida	O
felt	O
that	O
simply	O
combining	O
the	O
classic	O
elements	O
of	O
Space	B-Application
Invaders	I-Application
with	O
newer	O
ones	O
from	O
Trance	O
Pinball	O
would	O
not	O
resonate	O
well	O
with	O
the	O
current	O
generation	O
of	O
games	O
,	O
and	O
decided	O
that	O
updated	O
visuals	O
were	O
necessary	O
to	O
successfully	O
mix	O
the	O
elements	O
.	O
</s>
<s>
Ishida	O
also	O
drew	O
inspiration	O
from	O
Metal	B-Application
Black	I-Application
,	O
a	O
1991	O
Taito	O
shooting	O
game	O
;	O
he	O
commented	O
that	O
the	O
game	O
has	O
an	O
"	O
element	O
of	O
'	O
evolution	O
 '	O
as	O
well	O
"	O
.	O
</s>
<s>
The	O
iOS	B-Operating_System
iteration	O
of	O
the	O
game	O
has	O
received	O
critical	O
acclaim	O
.	O
</s>
<s>
The	O
HD	O
version	O
for	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
and	O
PlayStation	B-Device
Network	I-Device
has	O
also	O
received	O
positive	O
reviews	O
.	O
</s>
