<s>
Zendoku	B-Application
is	O
a	O
2007	O
puzzle	O
video	O
game	O
developed	O
by	O
Zoonami	O
and	O
published	O
by	O
Eidos	O
Interactive	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
and	O
PlayStation	B-Operating_System
Portable	I-Operating_System
handheld	O
consoles	O
.	O
</s>
<s>
Zendoku	B-Application
is	O
a	O
variation	O
of	O
Sudoku	O
,	O
offering	O
a	O
slightly	O
more	O
combative	O
experience	O
than	O
simply	O
lining	O
up	O
numbers	O
.	O
</s>
<s>
Zendoku	B-Application
was	O
developed	O
by	O
Zoonami	O
and	O
published	O
by	O
Eidos	O
Interactive	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
and	O
PlayStation	B-Operating_System
Portable	I-Operating_System
handheld	O
consoles	O
.	O
</s>
<s>
In	O
North	O
America	O
,	O
Zendoku	B-Application
was	O
released	O
to	O
retailers	O
on	O
June	O
18	O
,	O
2007	O
.	O
</s>
<s>
Zendoku	B-Application
received	O
generally	O
mixed	O
reviews	O
from	O
critics	O
.	O
</s>
<s>
The	O
UK	O
Nintendo	O
Magazine	O
,	O
ONM	O
praised	O
the	O
DS	B-Device
version	O
of	O
the	O
game	O
for	O
its	O
colourful	O
graphics	O
,	O
but	O
criticized	O
it	O
for	O
the	O
confusing	O
system	O
of	O
using	O
symbols	O
instead	O
of	O
numbers	O
,	O
as	O
well	O
as	O
the	O
minigames	O
feeling	O
tacked	O
on	O
and	O
more	O
of	O
an	O
annoyance	O
,	O
but	O
finished	O
by	O
saying	O
,	O
"	O
One	O
for	O
multiplayer	O
only	O
"	O
.	O
</s>
