<s>
Some	O
sources	O
claim	O
that	O
Ikegami	O
Tsushinki	O
also	O
did	O
programming	O
work	O
on	O
Space	B-Application
Fever	I-Application
.	O
</s>
<s>
The	O
gameplay	O
is	O
similar	O
to	O
Space	B-Application
Invaders	I-Application
,	O
which	O
had	O
been	O
released	O
by	O
Taito	O
in	O
1978	O
.	O
</s>
<s>
The	O
gameplay	O
of	O
Space	B-Application
Fever	I-Application
is	O
reminiscent	O
of	O
Space	B-Application
Invaders	I-Application
(	O
1978	O
)	O
,	O
where	O
the	O
player	O
controls	O
a	O
laser	O
cannon	O
situated	O
at	O
the	O
bottom	O
of	O
the	O
screen	O
and	O
must	O
defeat	O
waves	O
of	O
enemy	O
aliens	O
.	O
</s>
<s>
A	O
UFO	B-Application
will	O
occasionally	O
appear	O
towards	O
the	O
top	O
of	O
the	O
screen	O
,	O
which	O
can	O
be	O
shot	O
down	O
for	O
bonus	O
points	O
.	O
</s>
<s>
There	O
are	O
three	O
game	O
modes	O
that	O
change	O
the	O
way	O
the	O
aliens	O
move	O
;	O
the	O
first	O
presents	O
two	O
formations	O
of	O
enemies	O
that	O
move	O
in	O
opposite	O
directions	O
,	O
the	O
second	O
continuously	O
adds	O
additional	O
rows	O
of	O
aliens	O
,	O
and	O
the	O
third	O
is	O
functionally	O
identical	O
to	O
Space	B-Application
Invaders	I-Application
.	O
</s>
<s>
Nintendo	O
had	O
previously	O
designed	O
several	O
electro-mechanical	O
shooting	O
gallery	O
machines	O
,	O
such	O
as	O
the	O
Laser	B-Application
Clay	I-Application
Shooting	I-Application
System	I-Application
and	O
Wild	B-Application
Gunman	I-Application
.	O
</s>
<s>
In	O
the	O
same	O
month	O
,	O
Taito	O
released	O
Space	B-Application
Invaders	I-Application
,	O
which	O
triggered	O
a	O
nationwide	O
resurgence	O
in	O
its	O
video	O
game	O
market	O
.	O
</s>
<s>
Space	B-Application
Fever	I-Application
was	O
one	O
of	O
its	O
attempts	O
,	O
and	O
was	O
developed	O
by	O
Nintendo	O
's	O
Research	O
&	O
Development	O
2	O
(	O
R&D2	O
)	O
division	O
.	O
</s>
<s>
Masayuki	B-Application
Uemura	I-Application
,	O
the	O
head	O
of	O
R&D2	O
,	O
led	O
the	O
development	O
of	O
the	O
game	O
.	O
</s>
<s>
Space	B-Application
Fever	I-Application
was	O
released	O
in	O
Japan	O
in	O
February	O
1979	O
.	O
</s>
<s>
It	O
was	O
released	O
as	O
a	O
tabletop	O
arcade	O
cabinet	O
with	O
a	O
black	B-Application
and	I-Application
white	I-Application
raster	B-Algorithm
monitor	O
;	O
a	O
version	O
featuring	O
single-color	O
graphics	O
was	O
released	O
later	O
in	O
the	O
year	O
.	O
</s>
<s>
A	O
special	O
version	O
of	O
Space	B-Application
Fever	I-Application
called	O
was	O
released	O
the	O
same	O
year	O
and	O
features	O
aliens	O
that	O
are	O
double	O
the	O
width	O
of	O
the	O
standard	O
variety	O
,	O
which	O
can	O
either	O
be	O
destroyed	O
completely	O
or	O
split	O
into	O
two	O
smaller	O
aliens	O
depending	O
on	O
where	O
they	O
are	O
shot	O
.	O
</s>
<s>
Like	O
with	O
the	O
original	O
Space	B-Application
Fever	I-Application
,	O
SF-Hisplitter	O
was	O
also	O
distributed	O
in	O
America	O
by	O
Far	O
East	O
Video	O
.	O
</s>
<s>
A	O
sequel	O
to	O
Space	B-Application
Fever	I-Application
,	O
titled	O
is	O
a	O
minigame	O
in	O
the	O
Game	B-Application
Boy	I-Application
Camera	I-Application
cartridge	O
.	O
</s>
<s>
It	O
deviates	O
from	O
the	O
Space	B-Application
Invaders	I-Application
formula	O
,	O
featuring	O
instead	O
smaller	O
waves	O
of	O
individual	O
aliens	O
and	O
bosses	O
based	O
on	O
faces	O
of	O
Nintendo	O
staff	O
as	O
well	O
as	O
the	O
"	O
game	O
face	O
"	O
photo	O
taken	O
by	O
the	O
player	O
.	O
</s>
