<s>
is	O
a	O
1986	O
arcade	O
game	O
by	O
Sega	O
,	O
and	O
the	O
first	O
game	O
in	O
the	O
Fantasy	B-Application
Zone	I-Application
series	O
.	O
</s>
<s>
The	O
player	O
controls	O
a	O
sentient	O
spaceship	O
named	O
Opa-Opa	B-Application
who	O
fights	O
an	O
enemy	O
invasion	O
in	O
the	O
titular	O
group	O
of	O
planets	O
.	O
</s>
<s>
The	O
main	O
character	O
,	O
Opa-Opa	B-Application
,	O
is	O
sometimes	O
referred	O
to	O
as	O
Sega	O
's	O
first	O
mascot	B-Application
character	O
.	O
</s>
<s>
The	O
game	O
design	O
and	O
main	O
character	O
have	O
many	O
similarities	O
to	O
the	O
earlier	O
TwinBee	B-Device
,	O
and	O
both	O
are	O
credited	O
with	O
establishing	O
the	O
cute	O
'	O
em	O
up	O
subgenre	O
.	O
</s>
<s>
Opa-Opa	B-Application
uses	O
two	O
different	O
attacks	O
:	O
the	O
standard	O
weapon	O
(	O
initially	O
bullets	O
)	O
and	O
bombs	O
.	O
</s>
<s>
It	O
is	O
possible	O
to	O
upgrade	O
Opa-Opa	B-Application
'	O
s	O
weapons	O
,	O
get	O
bombs	O
and	O
flying	O
engine	O
to	O
increase	O
speed	O
,	O
and	O
get	O
extra	O
lives	O
.	O
</s>
<s>
Fantasy	B-Application
Zone	I-Application
was	O
ported	O
to	O
the	O
Sega	O
Master	O
System	O
,	O
MSX	B-Operating_System
,	O
Nintendo	O
Entertainment	O
System	O
,	O
Sharp	B-Device
X68000	I-Device
,	O
and	O
PC	O
Engineall	O
with	O
similar	O
gameplay	O
.	O
</s>
<s>
In	O
1997	O
,	O
Fantasy	B-Application
Zone	I-Application
was	O
released	O
in	O
the	O
Sega	O
Ages	O
series	O
in	O
Japan	O
for	O
the	O
Sega	B-Device
Saturn	I-Device
.	O
</s>
<s>
Fantasy	B-Application
Zone	I-Application
was	O
re-released	O
as	O
an	O
enhanced	O
remake	O
for	O
the	O
PlayStation	B-Device
2	I-Device
,	O
again	O
in	O
the	O
Sega	O
Ages	O
series	O
.	O
</s>
<s>
Although	O
similar	O
in	O
appearance	O
to	O
the	O
arcade	O
version	O
(	O
even	O
incorporating	O
the	O
original	O
arcade	O
sounds	O
)	O
,	O
this	O
version	O
uses	O
polygons	O
instead	O
of	O
sprites	O
and	O
adds	O
some	O
stages	O
,	O
including	O
bonus	O
levels	O
with	O
the	O
viewpoint	O
behind	O
Opa-Opa	B-Application
as	O
he	O
tries	O
to	O
collect	O
coins	O
from	O
any	O
boss	O
that	O
was	O
defeated	O
at	O
the	O
moment	O
;	O
this	O
game	O
mode	O
is	O
very	O
similar	O
to	O
Space	B-Application
Harrier	I-Application
,	O
or	O
the	O
unreleased	O
Space	O
Fantasy	B-Application
Zone	I-Application
.	O
</s>
<s>
Fantasy	B-Application
Zone	I-Application
was	O
released	O
for	O
mobile	O
phones	O
in	O
2002	O
in	O
Japan	O
and	O
in	O
August	O
2003	O
in	O
the	O
United	O
States	O
.	O
</s>
<s>
On	O
September	O
18	O
,	O
the	O
final	O
Sega	O
Ages	O
disc	O
was	O
devoted	O
to	O
the	O
series	O
,	O
Fantasy	B-Application
Zone	I-Application
Complete	O
Collection	O
.	O
</s>
<s>
Instead	O
of	O
a	O
3D	O
remake	O
,	O
it	O
compiles	O
all	O
of	O
the	O
games	O
in	O
the	O
series	O
,	O
including	O
spin-offs	O
,	O
all	O
of	O
Sega	O
's	O
own	O
versions	O
,	O
and	O
a	O
remake	O
of	O
Fantasy	B-Application
Zone	I-Application
II	I-Application
for	O
System	O
16	O
hardware	O
.	O
</s>
<s>
The	O
original	O
arcade	O
version	O
is	O
unlockable	O
in	O
Sonic	B-Application
's	I-Application
Ultimate	I-Application
Genesis	I-Application
Collection	I-Application
.	O
</s>
<s>
A	O
3D	O
port	O
of	O
the	O
game	O
was	O
released	O
on	O
March	O
19	O
,	O
2014	O
for	O
the	O
Nintendo	B-Operating_System
3DS	I-Operating_System
titled	O
3D	O
Fantasy	B-Application
Zone	I-Application
:	O
Opa-Opa	B-Application
Bros	O
.	O
New	O
features	O
of	O
the	O
3DS	B-Operating_System
port	O
involve	O
stereoscopic	O
3D	O
visuals	O
,	O
adjustable	O
difficulty	O
settings	O
,	O
the	O
ability	O
to	O
save	O
the	O
game	O
,	O
the	O
ability	O
to	O
switch	O
to	O
the	O
Japanese	O
versions	O
and	O
US	O
versions	O
of	O
the	O
game	O
,	O
a	O
Stage	O
Select	O
feature	O
,	O
and	O
a	O
new	O
mode	O
which	O
involves	O
the	O
player	O
playing	O
as	O
Upa-Upa	O
,	O
Opa-Opa	B-Application
'	O
s	O
brother	O
.	O
</s>
<s>
The	O
arcade	O
version	O
is	O
a	O
minigame	O
in	O
several	O
entries	O
in	O
the	O
Yakuza	B-Application
series	O
,	O
beginning	O
with	O
Yakuza	B-Application
0	I-Application
.	O
</s>
<s>
On	O
June	O
3	O
,	O
2022	O
,	O
Sega	O
announced	O
that	O
a	O
brand	O
new	O
Sega	B-Operating_System
Genesis	I-Operating_System
port	O
of	O
the	O
game	O
has	O
been	O
developed	O
for	O
the	O
Sega	B-Application
Genesis	I-Application
Mini	I-Application
2	O
,	O
the	O
successor	O
to	O
the	O
Sega	B-Application
Genesis	I-Application
Mini	I-Application
microconsole	O
,	O
released	O
on	O
October	O
27	O
,	O
2022	O
.	O
</s>
<s>
Fantasy	B-Application
Zone	I-Application
was	O
very	O
successful	O
in	O
Japanese	O
arcades	O
,	O
helping	O
to	O
give	O
rise	O
to	O
the	O
popular	O
System	O
16	O
arcade	O
board	O
.	O
</s>
<s>
It	O
was	O
the	O
top-grossing	O
arcade	O
game	O
in	O
Japan	O
from	O
July	B-Application
–	I-Application
August	I-Application
1986	I-Application
.	O
</s>
<s>
In	O
1989	O
,	O
Computer	O
and	O
Video	O
Games	O
rated	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
version	O
88%	O
and	O
the	O
Master	O
System	O
version	O
87%	O
,	O
considering	O
the	O
PC	B-General_Concept
Engine	I-General_Concept
version	O
to	O
be	O
better	O
than	O
the	O
Master	O
System	O
version	O
but	O
not	O
as	O
commercially	O
successful	O
.	O
</s>
