<s>
Mystery	B-Application
Case	I-Application
Files	I-Application
:	I-Application
MillionHeir	I-Application
is	O
a	O
puzzle	O
adventure	O
video	O
game	O
developed	O
by	O
Big	O
Fish	O
Games	O
and	O
Griptonite	O
Games	O
and	O
published	O
by	O
Nintendo	O
,	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
It	O
is	O
the	O
second	O
Mystery	B-Application
Case	I-Application
Files	I-Application
game	O
to	O
be	O
made	O
for	O
a	O
portable	O
device	O
.	O
</s>
<s>
The	O
game	O
received	O
"	O
mixed	O
"	O
reviews	O
,	O
according	O
to	O
video	O
game	O
review	B-Application
aggregator	I-Application
Metacritic	O
.	O
</s>
<s>
Hatfield	O
said	O
that	O
the	O
game	O
took	O
full	O
advantage	O
of	O
the	O
Nintendo	B-Device
DS	I-Device
's	O
unique	O
features	O
.	O
</s>
