<s>
The	O
Colorvision	O
,	O
is	O
a	O
handheld	B-Application
video	I-Application
game	I-Application
console	I-Application
developed	O
and	O
manufactured	O
by	O
Hong	O
Kong-based	O
company	O
Romtec	O
Enterprises	O
,	O
Ltd.	O
,	O
released	O
in	O
Hong	O
Kong	O
and	O
Europe	O
in	O
1984	O
.	O
</s>
<s>
It	O
is	O
the	O
first	O
handheld	B-Application
video	I-Application
game	I-Application
console	I-Application
to	O
have	O
colored	O
sprites	O
on	O
a	O
LCD	O
screen	O
instead	O
of	O
overlays	O
or	O
VFD	B-General_Concept
displays	O
.	O
</s>
<s>
Previous	O
systems	O
like	O
The	O
Entex	B-Application
Select-A-Game	I-Application
had	O
games	O
that	O
came	O
with	O
overlays	O
to	O
enhance	O
the	O
graphics	O
and	O
play	O
experience	O
,	O
while	O
only	O
the	O
cartridge	O
is	O
needed	O
on	O
the	O
Colorvision	O
.	O
</s>
<s>
The	O
game	O
code	O
was	O
all	O
contained	O
in	O
the	O
console	O
,	O
meaning	O
that	O
the	O
cartridges	O
functioned	O
similar	O
to	O
the	O
jumper	O
cards	O
on	O
the	O
Magnavox	B-Device
Odyssey	I-Device
to	O
control	O
which	O
game	O
would	O
be	O
played	O
,	O
and	O
only	O
contained	O
the	O
LCD	O
portion	O
of	O
the	O
game	O
with	O
the	O
sprites	O
.	O
</s>
<s>
The	O
play	O
screen	O
is	O
a	O
mirror	O
,	O
similar	O
to	O
the	O
Adventure	B-Application
Vision	I-Application
,	O
that	O
reflects	O
the	O
LCD	O
image	O
using	O
the	O
light	O
that	O
shines	O
from	O
the	O
window	O
on	O
top	O
.	O
</s>
