<s>
Brain	B-Application
Boost	I-Application
,	O
also	O
known	O
as	O
The	B-Application
Professor	I-Application
's	I-Application
Brain	I-Application
Trainer	I-Application
in	O
Australia	O
and	O
Europe	O
,	O
is	O
a	O
series	O
of	O
three	O
brain-training	O
games	O
developed	O
by	O
Interchannel	O
for	O
the	O
Nintendo	B-Device
DS	I-Device
handheld	O
game	O
console	O
.	O
</s>
<s>
Brain	B-Application
Boost	I-Application
was	O
originally	O
released	O
in	O
2005	O
in	O
Japan	O
.	O
</s>
<s>
Brain	B-Application
Boost	I-Application
Beta	O
Wave	O
,	O
subtitled	O
"	O
Improve	O
your	O
concentration	O
"	O
,	O
The	B-Application
Professor	I-Application
's	I-Application
Brain	I-Application
Trainer	I-Application
:	O
Logic	O
in	O
Australia	O
and	O
Europe	O
.	O
</s>
<s>
Brain	B-Application
Boost	I-Application
Gamma	O
Wave	O
,	O
subtitled	O
"	O
Improve	O
your	O
memory	O
"	O
,	O
a.k.a.	O
</s>
<s>
The	B-Application
Professor	I-Application
's	I-Application
Brain	I-Application
Trainer	I-Application
:	O
Memory	O
in	O
Australia	O
and	O
Europe	O
.	O
</s>
<s>
Mega	B-Application
Brain	I-Application
Boost	I-Application
,	O
subtitled	O
"	O
Boost	O
your	O
brain	O
power	O
with	O
3	O
games-in-1	O
"	O
.	O
</s>
<s>
This	O
game	O
includes	O
Brain	B-Application
Boost	I-Application
Beta	O
Wave	O
,	O
Brain	B-Application
Boost	I-Application
Gamma	O
Wave	O
,	O
and	O
a	O
new	O
game	O
.	O
</s>
<s>
Brain	B-Application
Boost	I-Application
Beta	O
Wave	O
has	O
a	O
Metacritic	O
score	O
of	O
39%	O
based	O
on	O
12	O
critic	O
reviews	O
.	O
</s>
