<s>
is	O
a	O
1990	O
puzzle	O
video	O
game	O
produced	O
by	O
Namco	O
for	O
the	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive	I-Operating_System
.	O
</s>
<s>
At	O
a	O
quick	O
glance	O
Megapanel	B-Application
is	O
similar	O
to	O
Tetris	B-Device
.	O
</s>
<s>
Like	O
Tetris	B-Device
,	O
the	O
player	O
attempts	O
to	O
keep	O
the	O
blocks	O
from	O
reaching	O
the	O
top	O
of	O
the	O
screen	O
before	O
the	O
various	O
required	O
goals	O
are	O
achieved	O
.	O
</s>
