<s>
The	O
DECO	B-Application
Cassette	I-Application
System	I-Application
was	O
introduced	O
by	O
Data	O
East	O
in	O
October	B-Application
1980	I-Application
.	O
</s>
<s>
The	O
arcade	O
owner	O
would	O
buy	O
a	O
base	O
cabinet	O
,	O
while	O
the	O
games	O
were	O
stored	O
on	O
standard	O
audio	O
cassette	B-Architecture
tapes	I-Architecture
.	O
</s>
<s>
The	O
arcade	O
owner	O
would	O
insert	O
the	O
cassette	O
and	O
a	O
key	B-Device
module	I-Device
into	O
the	O
cabinet	O
.	O
</s>
<s>
When	O
the	O
machine	O
was	O
powered	O
on	O
,	O
the	O
program	O
from	O
the	O
tape	O
would	O
be	O
copied	O
into	O
the	O
cabinet	O
's	O
RAM	B-Architecture
chips	I-Architecture
;	O
this	O
process	O
took	O
about	O
two	O
to	O
three	O
minutes	O
.	O
</s>
<s>
In	O
Japan	O
,	O
the	O
Game	O
Machine	O
list	O
of	O
highest-grossing	O
arcade	B-Application
video	I-Application
games	I-Application
of	I-Application
1981	I-Application
listed	O
Pro	O
Golf	O
at	O
number	O
three	O
and	O
Tele-Jan	O
at	O
number	O
thirteen	O
.	O
</s>
<s>
On	O
the	O
list	O
of	O
highest-grossing	O
arcade	B-Application
video	I-Application
games	I-Application
of	I-Application
1982	I-Application
,	O
Burnin	B-Application
 '	I-Application
Rubber	I-Application
(	O
Bump	B-Application
'	I-Application
n	I-Application
 '	I-Application
Jump	I-Application
)	O
was	O
number	O
nine	O
,	O
BurgerTime	B-Application
(	O
Hamburger	O
)	O
was	O
number	O
eleven	O
,	O
and	O
Pro	O
Tennis	O
was	O
number	O
fifteen	O
.	O
</s>
<s>
Game	O
Machine	O
later	O
listed	O
Pro	O
Soccer	O
as	O
the	O
top-grossing	O
new	O
table	O
arcade	O
cabinet	O
in	O
September	B-Application
1983	I-Application
,	O
and	O
Scrum	O
Try	O
topped	O
the	O
table	O
arcade	O
game	O
chart	O
in	O
April	B-Application
1984	I-Application
.	O
</s>
<s>
It	O
inspired	O
Sega	O
's	O
Convert-a-Game	B-Application
system	O
,	O
which	O
released	O
in	O
1981	O
.	O
</s>
<s>
Later	O
interchangeable	O
arcade	O
systems	O
followed	O
from	O
other	O
companies	O
,	O
such	O
as	O
the	O
Nintendo	B-Application
VS.	I-Application
System	I-Application
in	O
1984	O
.	O
</s>
<s>
The	O
DECO	B-Application
Cassette	I-Application
System	I-Application
was	O
revolutionary	O
for	O
its	O
time	O
;	O
but	O
Data	O
East	O
discontinued	O
it	O
in	O
1985	O
due	O
to	O
arcade	O
owners	O
 '	O
complaints	O
about	O
the	O
potential	O
unreliability	O
of	O
both	O
the	O
tapes	O
(	O
which	O
could	O
be	O
demagnetized	O
easily	O
)	O
and	O
key	O
modules	O
(	O
which	O
EPROMs	O
went	O
bad	O
after	O
a	O
time	O
)	O
,	O
as	O
well	O
as	O
the	O
poor	O
quality	O
of	O
most	O
of	O
its	O
games	O
and	O
the	O
medium	O
's	O
long	O
loading	O
times	O
.	O
</s>
<s>
Despite	O
its	O
bad	O
qualities	O
,	O
the	O
DECO	B-Application
Cassette	I-Application
System	I-Application
was	O
better	O
received	O
in	O
Japan	O
,	O
where	O
many	O
more	O
games	O
were	O
released	O
for	O
it	O
.	O
</s>
<s>
John	O
Szczepaniak	O
of	O
Hardcore	O
Gaming	O
101	O
considers	O
the	O
DECO	O
scrolling	O
action	B-Application
game	I-Application
Flash	O
Boy	O
(	O
1981	O
)	O
,	O
based	O
on	O
the	O
manga	O
and	O
anime	O
series	O
Astro	B-Application
Boy	I-Application
(	O
1952	O
–	O
1968	O
)	O
,	O
to	O
be	O
sophisticated	O
for	O
its	O
time	O
.	O
</s>
<s>
There	O
is	O
also	O
a	O
boss	O
battle	O
at	O
the	O
end	O
of	O
each	O
level	O
,	O
as	O
well	O
as	O
bi-directional	O
side-scrolling	O
similar	O
to	O
Defender	B-Application
.	O
</s>
