<s>
Titan	B-Application
Attacks	I-Application
!	I-Application
</s>
<s>
is	O
a	O
fixed	O
shooter	O
video	O
game	O
developed	O
and	O
published	O
by	O
Puppy	O
Games	O
and	O
released	O
on	O
March	O
13	O
,	O
2006	O
for	O
Windows	B-Application
,	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
and	O
Linux	B-Application
.	O
</s>
<s>
The	O
game	O
was	O
also	O
published	O
by	O
Curve	O
Studios	O
and	O
released	O
on	O
May	O
6	O
,	O
2014	O
for	O
PS3	B-Operating_System
,	O
PS4	B-Operating_System
and	O
Vita	B-Device
,	O
on	O
February	O
26	O
,	O
2015	O
for	O
3DS	B-Operating_System
,	O
and	O
on	O
September	O
17	O
,	O
2016	O
for	O
Android	B-Application
.	O
</s>
<s>
The	O
game	O
received	O
mixed	O
reviews	O
from	O
critics	O
,	O
commending	O
its	O
art	O
style	O
and	O
addictiveness	O
but	O
citing	O
its	O
small	O
amount	O
of	O
content	O
and	O
problems	O
with	O
the	O
3DS	B-Operating_System
port	O
of	O
the	O
game	O
.	O
</s>
<s>
It	O
was	O
followed	O
by	O
a	O
sequel	O
,	O
Revenge	B-Language
of	I-Language
the	I-Language
Titans	I-Language
,	O
in	O
2010	O
.	O
</s>
<s>
Titan	B-Application
Attacks	I-Application
!	I-Application
</s>
<s>
is	O
heavily	O
based	O
on	O
Space	B-Application
Invaders	I-Application
in	O
overall	O
format	O
,	O
but	O
more	O
fast-paced	O
than	O
the	O
latter	O
game	O
.	O
</s>
<s>
The	O
game	O
received	O
mixed	O
reviews	O
from	O
critics	O
,	O
and	O
holds	O
an	O
aggregate	O
score	O
of	O
74/100	O
for	O
the	O
PS4	B-Operating_System
version	O
on	O
Metacritic	O
.	O
</s>
<s>
Wesley	O
Copeland	O
of	O
Pocket	O
Gamer	O
UK	O
gave	O
the	O
game	O
a	O
score	O
of	O
7/10	O
,	O
saying	O
it	O
still	O
feels	O
"	O
fresh	O
and	O
inventive	O
"	O
despite	O
its	O
old-school	O
design	O
,	O
and	O
adds	O
new	O
twists	O
to	O
the	O
Space	B-Application
Invaders	I-Application
formula	O
.	O
</s>
<s>
The	O
3DS	B-Operating_System
version	O
of	O
the	O
game	O
received	O
lower	O
review	O
scores	O
,	O
with	O
an	O
aggregate	O
score	O
of	O
64/100	O
on	O
Metacritic	O
.	O
</s>
<s>
Jonathan	O
Town	O
of	O
Nintendo	O
Life	O
called	O
the	O
game	O
's	O
"	O
vibrant	O
"	O
graphics	O
"	O
muted	O
and	O
dulled	O
down	O
"	O
by	O
the	O
smaller	O
screen	O
of	O
the	O
3DS	B-Operating_System
,	O
while	O
also	O
criticizing	O
its	O
lack	O
of	O
stereoscopic	B-Algorithm
3D	I-Algorithm
and	O
framerate	O
drops	O
during	O
intense	O
moments	O
.	O
</s>
<s>
Dan	O
Koopman	O
of	O
Nintendo	O
World	O
Report	O
gave	O
the	O
game	O
7/10	O
and	O
called	O
it	O
a	O
"	O
loving	O
Space	B-Application
Invaders	I-Application
tribute	O
"	O
,	O
but	O
also	O
criticized	O
the	O
lack	O
of	O
visual	O
quality	O
,	O
and	O
framerate	O
lag	O
.	O
</s>
