<s>
Buku	B-Application
Sudoku	I-Application
(	O
titled	O
Buku	B-Application
Números	I-Application
in	O
Mexico	O
and	O
Buku数字パズル	B-Application
in	O
Japan	O
)	O
is	O
a	O
downloadable	O
puzzle	O
game	O
developed	O
by	O
Ukrainian	O
studio	O
Absolutist	O
Ltd	O
and	O
published	O
by	O
Merscom	O
based	O
on	O
Sudoku	O
for	O
the	O
Windows	B-Application
PC	I-Application
's	I-Application
.	O
</s>
<s>
The	O
game	O
was	O
also	O
released	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
via	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
,	O
on	O
May	O
28	O
,	O
2008	O
.	O
</s>
<s>
Buku	B-Application
Sudoku	I-Application
360	B-Operating_System
offers	O
variations	O
on	O
the	O
traditional	O
Sudoku	O
puzzle	O
including	O
4x4	O
,	O
6x6	O
,	O
8x8	O
,	O
9x9	O
,	O
12x12	O
and	O
16x16	O
grids	O
.	O
</s>
<s>
The	O
Windows	B-Application
version	O
features	O
a	O
Puzzle	O
Mode	O
and	O
timed	O
Arcade	O
Mode	O
,	O
while	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
version	O
promises	O
co-op	O
and	O
competitive	O
online	O
play	O
.	O
</s>
<s>
The	O
Xbox	B-Device
Live	I-Device
Arcade	I-Device
version	O
of	O
Buku	B-Application
Sudoku	I-Application
will	O
feature	O
downloadable	O
content	O
packs	O
.	O
</s>
<s>
Buku	B-Application
Sudoku	I-Application
received	O
mixed	O
reviews	O
upon	O
the	O
game	O
's	O
release	O
on	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
.	O
</s>
<s>
On	O
Metacritic	O
,	O
the	O
game	O
holds	O
a	O
score	O
of	O
60/100	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
version	O
based	O
on	O
19	O
reviews	O
.	O
</s>
<s>
On	O
GameRankings	O
,	O
the	O
game	O
holds	O
a	O
score	O
of	O
58.53	O
%	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
version	O
based	O
on	O
17	O
reviews	O
.	O
</s>
