<s>
Pixel	B-Application
Defenders	I-Application
Puzzle	I-Application
is	O
a	O
tile-matching	B-Application
video	I-Application
game	I-Application
developed	O
by	O
American	O
studio	O
Social	O
Titans	O
for	O
iOS	B-Application
and	O
Android	B-Application
.	O
</s>
<s>
The	O
game	O
follows	O
standard	O
match-3	B-Application
mechanics	O
,	O
where	O
the	O
player	O
places	O
three	O
identical	O
units	O
next	O
to	O
each	O
other	O
to	O
upgrade	O
them	O
.	O
</s>
<s>
The	O
iOS	B-Application
version	O
received	O
"	O
favorable	O
"	O
reviews	O
according	O
to	O
the	O
review	B-Application
aggregation	I-Application
website	O
Metacritic	O
.	O
</s>
<s>
SlideToPlay	O
wrote	O
,	O
"	O
Pixel	B-Application
Defenders	I-Application
Puzzle	I-Application
has	O
lots	O
of	O
charm	O
and	O
challenge	O
,	O
and	O
that	O
's	O
exactly	O
what	O
we	O
look	O
for	O
in	O
a	O
great	O
puzzle	O
game	O
.	O
</s>
<s>
Although	O
the	O
main	O
gameplay	O
is	O
somewhat	O
similar	O
to	O
another	O
title	O
,	O
Triple	B-Application
Town	I-Application
,	O
the	O
combat	O
elements	O
make	O
Pixel	B-Application
Defenders	I-Application
Puzzle	I-Application
feel	O
fresh	O
and	O
exciting.	O
"	O
</s>
<s>
TouchArcade	O
wrote	O
,	O
"	O
There	O
's	O
always	O
been	O
something	O
satisfying	O
about	O
match-3	B-Application
mechanics	O
,	O
but	O
after	O
enough	O
years	O
playing	O
them	O
over	O
and	O
over	O
they	O
're	O
bound	O
to	O
start	O
feeling	O
stale	O
.	O
</s>
<s>
Pixel	B-Application
Defenders	I-Application
Puzzle	I-Application
steps	O
beyond	O
that	O
by	O
taking	O
something	O
from	O
a	O
game	O
that	O
was	O
already	O
an	O
excellent	O
evolution	O
of	O
the	O
genre	O
and	O
moving	O
it	O
forward	O
to	O
another	O
,	O
even-more	O
satisfying	O
level.	O
"	O
</s>
