<s>
is	O
an	O
arcade	O
game	O
released	O
by	O
Data	O
East	O
in	O
1986	B-Application
.	O
</s>
<s>
The	O
game	O
is	O
a	O
vertical	O
scrolling	O
shoot	O
'	O
em	O
up	O
like	O
Xevious	B-Application
,	O
but	O
as	O
the	O
title	O
indicates	O
,	O
Charles	O
Darwin	O
's	O
theory	O
of	O
evolution	O
is	O
incorporated	O
into	O
the	O
gameplay	O
.	O
</s>
<s>
Darwin	B-Application
4078	I-Application
was	O
ported	O
to	O
the	O
2nd	O
generation	O
MSX	B-Operating_System
in	O
1987	B-Application
by	O
Hudson	O
Soft	O
,	O
and	O
bore	O
similar	O
appearance	O
to	O
the	O
arcade	O
game	O
B-Wings	B-Application
and	O
the	O
NES	O
game	O
Hector	B-Device
'	I-Device
87	I-Device
.	O
</s>
<s>
was	O
released	O
by	O
Data	O
East	O
in	O
1987	B-Application
,	O
and	O
was	O
ported	O
by	O
Sega	O
on	O
April	O
8	O
,	O
1990	O
for	O
the	O
Sega	B-Operating_System
Mega	I-Operating_System
Drive	I-Operating_System
as	O
Darwin	B-Application
4081	I-Application
.	O
is	O
not	O
a	O
direct	O
sequel	O
to	O
the	O
game	O
,	O
but	O
bears	O
similarities	O
to	O
Darwin	O
as	O
a	O
side-scrolling	O
action	O
game	O
developed	O
by	O
Data	O
East	O
that	O
uses	O
an	O
evolution	O
system	O
.	O
</s>
<s>
Darwin	B-Application
4081	I-Application
was	O
numbered	O
4081	O
because	O
it	O
was	O
the	O
4th	O
game	O
that	O
used	O
the	O
evolution	O
system	O
after	O
Darwin	O
(	O
4078	O
)	O
,	O
S.R.D.	O
</s>
<s>
Other	O
similar	O
games	O
include	O
Bio-ship	B-Application
Paladin	I-Application
by	O
UPL	O
and	O
Bermuda	B-Application
Triangle	I-Application
by	O
SNK	O
,	O
which	O
also	O
feature	O
ships	O
that	O
change	O
appearance	O
with	O
power-ups	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Darwin	B-Application
4078	I-Application
on	O
their	O
April	O
15	O
,	O
1986	B-Application
issue	O
as	O
being	O
the	O
third	O
most-successful	O
table	O
arcade	O
unit	O
of	O
the	O
month	O
.	O
</s>
