<s>
Drop	B-Application
Mania	I-Application
is	O
a	O
falling-block	O
puzzle	O
video	O
game	O
,	O
developed	O
by	O
Ninai	O
Games	O
(	O
as	O
Detonium	O
Interactive	O
)	O
and	O
published	O
by	O
Suomen	O
Kotijäätelö	O
Oy	O
in	B-Application
1999	I-Application
for	O
Windows	B-Application
.	O
</s>
<s>
In	O
a	O
similar	O
fashion	O
to	O
Tetris	B-Device
,	O
coloured	O
blocks	O
drop	O
from	O
the	O
top	O
of	O
the	O
screen	O
and	O
collect	O
at	O
the	O
bottom	O
.	O
</s>
<s>
This	O
same	O
gameplay	O
would	O
be	O
implemented	O
in	O
the	O
2001	O
game	O
,	O
Rampage	B-Device
Puzzle	I-Device
Attack	I-Device
.	O
</s>
<s>
The	O
sequel	O
,	O
Super	B-Application
Drop	I-Application
Mania	I-Application
was	O
also	O
developed	O
by	O
Ninai	O
,	O
and	O
published	O
by	O
Fathammer	O
in	B-Application
2005	I-Application
.	O
</s>
<s>
It	O
is	O
designed	O
for	O
portable	O
devices	O
,	O
being	O
released	O
for	O
Symbian	B-Operating_System
OS	I-Operating_System
and	O
Windows	B-Operating_System
Mobile	I-Operating_System
.	O
</s>
<s>
One	O
review	O
criticising	O
the	O
lack	O
of	O
a	O
"	O
one	O
more	O
go	O
"	O
feeling	O
found	O
in	O
other	O
Tetris	B-Device
variants	I-Device
,	O
whilst	O
another	O
felt	O
that	O
it	O
was	O
even	O
more	O
addictive	O
.	O
</s>
