<s>
is	O
a	O
fixed	O
shooter	O
video	O
game	O
developed	O
and	O
published	O
by	O
Jaleco	O
for	O
arcades	B-Application
in	O
September	O
1983	O
,	O
and	O
licensed	O
to	O
Taito	O
for	O
manufacture	O
and	O
distribution	O
of	O
the	O
game	O
in	O
North	O
America	O
.	O
</s>
<s>
Exerion	B-Application
was	O
ported	O
to	O
the	O
MSX	B-Operating_System
,	O
Family	O
Computer	O
,	O
and	O
SG-1000	B-Operating_System
.	O
</s>
<s>
Exerion	B-Application
features	O
parallax	B-Device
effects	O
and	O
inertia	O
simulation	O
.	O
</s>
<s>
The	O
player	O
shoots	O
formations	O
of	O
bizarre	O
alien	O
amoeba	B-Operating_System
,	O
egg-throwing	O
birds	O
and	O
Pterosauric	O
creatures	O
,	O
as	O
well	O
as	O
UFOs	O
while	O
flying	O
over	O
the	O
surface	O
of	O
a	O
planet	O
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
Exerion	B-Application
as	O
the	O
top-grossing	O
new	O
table	O
arcade	B-Application
cabinet	O
in	O
November	O
1983	O
,	O
and	O
then	O
the	O
top-grossing	O
tablet	O
cabinet	O
in	O
December	O
1983	O
.	O
</s>
<s>
The	O
original	O
arcade	B-Application
version	O
was	O
later	O
released	O
for	O
the	O
PlayStation	O
4	O
as	O
part	O
of	O
the	O
Arcade	B-Application
Archives	I-Application
label	O
on	O
October	O
23	O
,	O
2014	O
in	O
Japan	O
and	O
on	O
July	O
7	O
,	O
2015	O
in	O
North	O
America	O
and	O
also	O
on	O
the	O
Nintendo	B-Application
Switch	I-Application
in	O
the	O
Nintendo	B-Application
eShop	I-Application
by	O
Hamster	O
Corporation	O
as	O
part	O
of	O
the	O
same	O
series	O
.	O
</s>
<s>
Exerion	B-Application
II	O
:	O
Zorni	O
was	O
released	O
for	O
the	O
MSX	B-Operating_System
in	O
1984	O
alongside	O
a	O
port	O
of	O
the	O
original	O
arcade	B-Application
game	O
.	O
</s>
<s>
The	O
second	O
,	O
Exerizer	O
,	O
was	O
released	O
for	O
arcades	B-Application
in	O
1987	O
,	O
which	O
was	O
released	O
in	O
North	O
America	O
by	O
Nichibutsu	O
under	O
the	O
title	O
Sky	O
Fox	O
.	O
</s>
<s>
The	O
player	O
's	O
ship	O
,	O
the	O
Fighter	O
EX	O
,	O
is	O
a	O
playable	O
character	O
in	O
Jaleco	O
's	O
Game	B-Application
Tengoku	I-Application
series	O
.	O
</s>
