<s>
Brain	B-Application
Age	I-Application
Express	I-Application
(	O
known	O
in	O
Japan	O
as	O
Chotto	B-Application
Brain	I-Application
Training	I-Application
and	O
in	O
Europe	O
and	O
Australia	O
as	O
A	O
Little	O
Bit	O
of	O
...	O
Dr	O
Kawashima	O
's	O
Brain	O
Training	O
)	O
are	O
three	O
educational	O
puzzle	O
video	O
games	O
developed	O
by	O
Nintendo	O
for	O
the	O
Nintendo	B-Device
DSi	I-Device
's	O
DSiWare	B-Device
download	O
service	O
.	O
</s>
<s>
They	O
are	O
the	O
third	O
series	O
of	O
games	O
in	O
the	O
Brain	O
Age	O
series	O
,	O
and	O
are	O
repackaged	O
versions	O
of	O
both	O
Brain	B-Application
Age	I-Application
:	I-Application
Train	I-Application
Your	I-Application
Brain	I-Application
in	I-Application
Minutes	I-Application
a	I-Application
Day	I-Application
!	I-Application
</s>
<s>
and	O
Brain	B-Application
Age	I-Application
2	I-Application
:	I-Application
More	I-Application
Training	I-Application
in	I-Application
Minutes	I-Application
a	I-Application
Day	I-Application
!	I-Application
</s>
<s>
The	O
Arts	O
&	O
Letters	O
and	O
Math	O
versions	O
were	O
released	O
on	O
December	O
24	O
,	O
2008	O
in	O
Japan	O
as	O
launch	O
titles	O
for	O
the	O
DSiWare	B-Device
service	O
,	O
and	O
the	O
Sudoku	O
edition	O
on	O
April	O
22	O
,	O
2009	O
in	O
Japan	O
as	O
well	O
.	O
</s>
<s>
One	O
puzzle	O
in	O
each	O
of	O
these	O
two	O
editions	O
utilizes	O
the	O
Nintendo	B-Device
DSi	I-Device
's	O
camera	O
function	O
,	O
while	O
both	O
versions	O
allow	O
players	O
to	O
use	O
a	O
photo	O
for	O
their	O
in-game	O
profile	O
.	O
</s>
<s>
On	O
June	O
19	O
,	O
2015	O
,	O
Brain	B-Application
Age	I-Application
Express	I-Application
:	O
Sudoku	O
was	O
pulled	O
from	O
the	O
DSi	B-Device
Shop	O
and	O
3DS	O
eShop	O
,	O
with	O
no	O
official	O
reason	O
given	O
.	O
</s>
<s>
Brain	B-Application
Age	I-Application
Express	I-Application
:	O
Math	O
and	O
Brain	B-Application
Age	I-Application
Express	I-Application
:	O
Arts	O
&	O
Letters	O
are	O
pre-installed	O
on	O
North	O
American	O
Nintendo	B-Device
DSi	I-Device
XLs	O
.	O
</s>
<s>
They	O
use	O
similar	O
gameplay	O
concepts	O
to	O
Brain	B-Application
Age	I-Application
:	I-Application
Train	I-Application
Your	I-Application
Brain	I-Application
in	I-Application
Minutes	I-Application
a	I-Application
Day	I-Application
!	I-Application
</s>
<s>
and	O
Brain	B-Application
Age	I-Application
2	I-Application
:	I-Application
More	I-Application
Training	I-Application
in	I-Application
Minutes	I-Application
a	I-Application
Day	I-Application
!	I-Application
</s>
<s>
Using	O
the	O
DSi	B-Device
's	O
internal	O
clock	O
,	O
both	O
versions	O
allow	O
for	O
only	O
one	O
official	O
Brain	O
Age	O
Check	O
per	O
day	O
.	O
</s>
<s>
Both	O
editions	O
include	O
Virus	O
Buster	O
,	O
also	O
known	O
as	O
Germ	O
Buster	O
,	O
a	O
non-training	O
puzzle	O
based	O
on	O
the	O
Dr.	B-Application
Mario	I-Application
series	O
.	O
</s>
<s>
One	O
new	O
puzzle	O
is	O
called	O
Photo	O
Memory	O
,	O
a	O
memory	O
puzzle	O
,	O
where	O
the	O
game	O
will	O
take	O
a	O
picture	O
from	O
either	O
the	O
game	O
itself	O
or	O
from	O
the	O
player	O
's	O
DSi	B-Device
,	O
show	O
it	O
to	O
the	O
player	O
,	O
and	O
then	O
have	O
the	O
player	O
pick	O
between	O
it	O
and	O
other	O
randomly	O
selected	O
images	O
from	O
the	O
player	O
's	O
folder	O
while	O
showing	O
another	O
image	O
to	O
memorize	O
,	O
and	O
so	O
on	O
.	O
</s>
<s>
This	O
version	O
,	O
unlike	O
the	O
Math	O
and	O
Arts	O
&	O
Letters	O
editions	O
,	O
did	O
not	O
use	O
the	O
DSi	B-Device
camera	O
nor	O
the	O
microphone	O
.	O
</s>
<s>
For	O
unknown	O
reasons	O
,	O
it	O
was	O
retired	O
on	O
June	O
19	O
,	O
2015	O
from	O
both	O
the	O
DSi	B-Device
Shop	O
and	O
the	O
3DS	O
eShop	O
,	O
and	O
the	O
game	O
has	O
since	O
been	O
lost	O
to	O
time	O
although	O
there	O
are	O
methods	O
to	O
download	O
the	O
software	O
that	O
involves	O
piracy	O
.	O
</s>
<s>
The	O
two	O
Brain	B-Application
Age	I-Application
Express	I-Application
titles	O
were	O
announced	O
on	O
October	O
2	O
,	O
2008	O
at	O
the	O
reveal	O
of	O
the	O
Nintendo	B-Device
DSi	I-Device
and	O
its	O
DSiWare	B-Device
service	O
and	O
were	O
released	O
on	O
December	O
24	O
,	O
2008	O
.	O
</s>
<s>
Nintendo	O
chose	O
the	O
most	O
popular	O
puzzles	O
from	O
Brain	B-Application
Age	I-Application
:	I-Application
Train	I-Application
Your	I-Application
Brain	I-Application
in	I-Application
Minutes	I-Application
a	I-Application
Day	I-Application
!	I-Application
</s>
<s>
and	O
Brain	B-Application
Age	I-Application
2	I-Application
:	I-Application
More	I-Application
Training	I-Application
in	I-Application
Minutes	I-Application
a	I-Application
Day	I-Application
!	I-Application
</s>
<s>
At	O
the	O
launch	O
of	O
Nintendo	B-Device
DSi	I-Device
in	O
the	O
U.S.	O
,	O
Brain	B-Application
Age	I-Application
Express	I-Application
:	O
Math	O
was	O
released	O
at	O
the	O
DSiWare	B-Device
launch	O
while	O
the	O
Sudoku	O
edition	O
is	O
available	O
in	O
Japan	O
on	O
April	O
22	O
,	O
2009	O
.	O
</s>
<s>
The	O
idea	O
for	O
Brain	B-Application
Age	I-Application
Express	I-Application
came	O
from	O
the	O
Download	O
Software	O
Subcommittee	O
meeting	O
back	O
when	O
Nintendo	O
was	O
developing	O
the	O
Nintendo	B-Device
DSi	I-Device
as	O
a	O
console	O
.	O
</s>
<s>
The	O
meetings	O
 '	O
progress	O
was	O
considerably	O
slow	O
,	O
due	O
to	O
the	O
nature	O
of	O
the	O
Nintendo	B-Device
DSi	I-Device
being	O
undetermined	O
at	O
that	O
point	O
.	O
</s>
<s>
Due	O
to	O
complications	O
between	O
Shigeru	O
Miyamoto	O
,	O
a	O
key	O
developer	O
of	O
Nintendo	O
,	O
and	O
Iwata	O
,	O
the	O
developers	O
were	O
having	O
a	O
difficult	O
time	O
getting	O
started	O
with	O
Brain	B-Application
Age	I-Application
Express	I-Application
.	O
</s>
<s>
Koichi	O
Kawamoto	O
,	O
lead	O
developer	O
of	O
Brain	B-Application
Age	I-Application
Express	I-Application
,	O
stated	O
that	O
while	O
the	O
retail	O
Brain	O
Age	O
games	O
,	O
after	O
players	O
collected	O
a	O
stamp	O
for	O
playing	O
through	O
a	O
certain	O
puzzle	O
,	O
they	O
were	O
returned	O
to	O
the	O
stamp	O
calendar	O
.	O
</s>
<s>
In	O
this	O
version	O
,	O
after	O
collecting	O
the	O
stamp	O
,	O
the	O
players	O
are	O
given	O
the	O
option	O
of	O
either	O
returning	O
to	O
the	O
main	O
menu	O
or	O
to	O
the	O
DSi	B-Device
's	O
menu	O
.	O
</s>
<s>
However	O
,	O
as	O
they	O
added	O
,	O
they	O
added	O
so	O
many	O
games	O
that	O
it	O
was	O
bigger	O
than	O
Brain	B-Application
Age	I-Application
2	I-Application
.	O
</s>
<s>
Shinya	O
Takahashi	O
,	O
the	O
coordinator	O
of	O
the	O
DSiWare	B-Device
service	O
,	O
suggested	O
splitting	O
the	O
title	O
into	O
two	O
titles	O
,	O
which	O
Kawamoto	O
thought	O
would	O
be	O
hard	O
,	O
but	O
could	O
be	O
done	O
.	O
</s>
<s>
The	O
development	O
staff	O
had	O
to	O
consider	O
what	O
to	O
carry	O
over	O
from	O
the	O
previous	O
two	O
Brain	O
Age	O
titles	O
to	O
the	O
Brain	B-Application
Age	I-Application
Express	I-Application
titles	O
.	O
</s>
<s>
The	O
Brain	B-Application
Age	I-Application
Express	I-Application
titles	O
were	O
a	O
part	O
of	O
the	O
"	O
My	O
DS	O
"	O
theme	O
,	O
which	O
allows	O
players	O
to	O
customize	O
their	O
Nintendo	B-Device
DSis	I-Device
,	O
resulting	O
in	O
people	O
naturally	O
thinking	O
that	O
there	O
would	O
be	O
only	O
one	O
save	O
slot	O
.	O
</s>
<s>
Normally	O
,	O
guests	O
 '	O
data	O
is	O
not	O
saved	O
,	O
but	O
in	O
the	O
Brain	B-Application
Age	I-Application
Express	I-Application
titles	O
,	O
certain	O
guest	O
data	O
,	O
including	O
their	O
brain	O
ages	O
drawings	O
,	O
photos	O
,	O
and	O
voices	O
.	O
</s>
<s>
When	O
the	O
player	O
reaches	O
a	O
brain	O
age	O
of	O
20	O
in	O
the	O
Brain	B-Application
Age	I-Application
Express	I-Application
titles	O
,	O
it	O
unlocks	O
a	O
challenge	O
mode	O
.	O
</s>
<s>
In	O
their	O
impressions	O
of	O
the	O
Japanese	O
release	O
of	O
the	O
two	O
original	O
titles	O
in	O
the	O
Brain	B-Application
Age	I-Application
Express	I-Application
series	O
,	O
IGN	O
described	O
the	O
two	O
titles	O
as	O
perfect	O
showpieces	O
for	O
the	O
DSiWare	B-Device
service	O
,	O
due	O
to	O
the	O
eliminating	O
cartridge	O
swapping	O
.	O
</s>
