<s>
Originally	O
released	O
as	O
a	O
Flash	B-Operating_System
game	O
in	O
2009	O
,	O
Delbo	B-Operating_System
was	O
later	O
released	O
for	O
Nintendo	B-Device
DSi	I-Device
's	O
DSiWare	B-Device
download	O
service	O
in	O
2010	O
.	O
</s>
<s>
Versions	O
for	O
Android	B-Application
and	O
iOS	B-Application
devices	O
were	O
released	O
in	O
2013	O
.	O
</s>
<s>
Delbo	B-Operating_System
is	O
a	O
tile-matching	B-Application
video	I-Application
game	I-Application
similar	O
to	O
Magical	B-Application
Drop	I-Application
and	O
Puzzle	B-Application
Bobble	I-Application
.	O
</s>
<s>
The	O
Nintendo	B-Device
DSi	I-Device
version	O
of	O
the	O
game	O
has	O
a	O
plot	O
where	O
the	O
player	O
assumes	O
the	O
role	O
of	O
a	O
young	O
woman	O
who	O
was	O
praying	O
to	O
bring	O
back	O
her	O
deceased	O
lover	O
,	O
but	O
suddenly	O
was	O
surrounded	O
by	O
an	O
infinite	O
of	O
crystal	O
orbs	O
.	O
</s>
<s>
Also	O
,	O
the	O
DSi	B-Device
version	O
uses	O
an	O
unusual	O
"	O
book	O
style	O
"	O
design	O
that	O
requires	O
holding	O
the	O
console	O
on	O
its	O
side	O
like	O
a	O
book	O
.	O
</s>
<s>
Delbo	B-Operating_System
was	O
created	O
in	O
Adobe	B-Operating_System
Flash	I-Operating_System
by	O
the	O
gamedesigner	O
Kazumasa	O
Hamamoto	O
and	O
was	O
made	O
available	O
at	O
the	O
developer	O
's	O
Beyond	O
Interactive	O
web	O
site	O
in	O
2009	O
.	O
</s>
<s>
The	O
Nintendo	B-Device
DS	I-Device
version	O
of	O
the	O
game	O
with	O
enhanced	O
graphics	O
was	O
released	O
on	O
March	O
31	O
,	O
2010	O
,	O
in	O
Japan	O
as	O
a	O
DSiWare	B-Device
digital	O
title	O
.	O
</s>
<s>
In	O
Europe	O
and	O
North	O
America	O
,	O
the	O
DSiWare	B-Device
version	O
was	O
published	O
by	O
Neko	O
Entertainment	O
on	O
June	O
23	O
,	O
2011	O
.	O
</s>
<s>
The	O
Android	B-Application
and	O
iOS	B-Application
version	O
were	O
released	O
in	O
Autumn	O
2013	O
.	O
</s>
<s>
Delbo	B-Operating_System
received	O
a	O
mixed	O
response	O
from	O
reviewers	O
.	O
</s>
<s>
Zach	O
Kaplan	O
of	O
Nintendo	O
Life	O
praised	O
the	O
game	O
for	O
its	O
addictive	O
gameplay	O
and	O
described	O
it	O
as	O
"	O
a	O
cross	O
between	O
Magical	O
Drop/Ball	O
Fighter	O
and	O
Tetris	B-Application
Attack	I-Application
"	O
.	O
</s>
<s>
In	O
a	O
positive	O
review	O
for	O
Digitally	O
Downloaded	O
,	O
Matt	O
Sainsbury	O
said	O
that	O
Delbo	B-Operating_System
"	O
is	O
good	O
value	O
,	O
and	O
a	O
must	O
have	O
for	O
anyone	O
that	O
enjoyed	O
challenging	O
and	O
fast-paced	O
puzzle	O
games	O
"	O
.	O
</s>
<s>
Lucas	O
M	O
.	O
Thomas	O
of	O
IGN	O
called	O
the	O
game	O
"	O
a	O
poor	O
man	O
's	O
Magical	B-Application
Drop	I-Application
"	O
.	O
</s>
