<s>
is	O
an	O
action-platform	O
video	O
game	O
developed	O
and	O
published	O
by	O
Jaleco	O
for	O
the	O
Famicom	O
.	O
</s>
<s>
It	O
was	O
released	O
in	O
Japan	O
on	O
November	O
15	O
,	O
1985	O
,	O
and	O
was	O
ported	O
to	O
the	O
MSX	B-Operating_System
in	O
1986	O
.	O
</s>
<s>
The	O
MSX	B-Operating_System
version	O
was	O
released	O
in	O
Europe	O
as	O
Ninja	O
II	O
,	O
being	O
marketed	O
as	O
a	O
sequel	O
to	O
Ninja-kun	B-Application
:	I-Application
Majou	I-Application
no	I-Application
Bouken	I-Application
,	O
a	O
game	O
that	O
used	O
the	O
name	O
Ninja	O
for	O
its	O
European	O
MSX	B-Operating_System
release	O
.	O
</s>
<s>
An	O
arcade	B-Application
video	I-Application
game	I-Application
port	O
for	O
the	O
Nintendo	B-Application
VS.	I-Application
System	I-Application
was	O
released	O
in	O
April	O
1986	O
.	O
</s>
<s>
A	O
remake	O
,	O
Ganso	B-Application
JaJaMaru-kun	I-Application
,	O
was	O
released	O
in	O
1999	O
for	O
the	O
WonderSwan	B-Operating_System
.	O
</s>
<s>
Ninja	B-Application
JaJaMaru-kun	I-Application
was	O
released	O
for	O
Nintendo	O
's	O
Japanese	O
Virtual	B-Application
Console	I-Application
on	O
December	O
26	O
,	O
2006	O
,	O
and	O
in	O
PAL	O
regions	O
on	O
September	O
21	O
,	O
2007	O
,	O
as	O
part	O
of	O
Ninja	O
Week	O
for	O
the	O
Hanabi	O
Festival	O
promotion	O
.	O
</s>
<s>
It	O
was	O
released	O
on	O
the	O
North	O
American	O
Virtual	B-Application
Console	I-Application
on	O
October	O
22	O
the	O
same	O
year	O
.	O
</s>
<s>
The	O
game	O
was	O
released	O
on	O
the	O
Nintendo	B-Application
Switch	I-Application
through	O
Nintendo	B-Application
Switch	I-Application
Online	I-Application
in	O
May	O
2021	O
.	O
</s>
<s>
In	O
Ninja	B-Application
JaJaMaru-kun	I-Application
,	O
the	O
player	O
takes	O
control	O
of	O
JaJaMaru	O
,	O
who	O
sets	O
out	O
to	O
rescue	O
Princess	O
Sakura	O
from	O
the	O
pirate	O
lord	O
Namazu	O
Dayuu	O
,	O
or	O
"	O
Catfish	O
Pirate	O
"	O
.	O
</s>
<s>
Ninja	B-Application
JaJaMaru-kun	I-Application
was	O
developed	O
and	O
published	O
by	O
Jaleco	O
for	O
the	O
Family	O
Computer	O
in	O
Japan	O
on	O
November	O
18	O
,	O
1985	O
.	O
</s>
<s>
The	O
game	O
is	O
a	O
spin-off	O
of	O
Ninja-Kid	B-Application
(	O
1984	O
)	O
,	O
an	O
arcade	B-Application
video	I-Application
game	I-Application
originally	O
developed	O
by	O
Japanese	O
company	O
UPL	O
,	O
known	O
for	O
games	O
such	O
as	O
Atomic	B-Device
Robo	I-Device
Kid	I-Device
.	O
</s>
<s>
Jaleco	O
had	O
previously	O
ported	O
the	O
game	O
to	O
the	O
Famicom	O
in	O
early	O
1985	O
,	O
and	O
decided	O
to	O
re-use	O
the	O
Ninja-Kid	B-Application
character	O
for	O
their	O
own	O
home	O
console	O
game	O
,	O
now	O
named	O
Ninja	B-Application
JaJaMaru-kun	I-Application
.	O
</s>
<s>
A	O
Nintendo	B-Application
VS.	I-Application
System	I-Application
port	O
was	O
released	O
by	O
Jaleco	O
for	O
arcades	O
in	O
April	O
1986	O
.	O
is	O
a	O
remake	O
of	O
Ninja	B-Application
JaJaMaru-kun	I-Application
released	O
in	O
Japan	O
on	O
April	O
15	O
,	O
1999	O
,	O
by	O
Jaleco	O
for	O
the	O
WonderSwan	B-Operating_System
.	O
</s>
<s>
It	O
is	O
an	O
enhanced	O
version	O
of	O
the	O
original	O
Famicom	O
game	O
with	O
better	O
control	O
,	O
though	O
it	O
uses	O
monochrome	O
graphics	O
due	O
to	O
being	O
an	O
original	O
WonderSwan	B-Operating_System
game	O
.	O
</s>
<s>
Ninja	B-Application
JaJaMaru-kun	I-Application
was	O
added	O
as	O
a	O
playable	O
game	O
to	O
Nintendo	B-Application
Switch	I-Application
Online	I-Application
in	O
May	O
2021	O
.	O
</s>
<s>
By	O
April	O
1986	O
,	O
it	O
had	O
sold	O
nearly	O
units	O
,	O
becoming	O
one	O
of	O
the	O
best-selling	B-Device
Famicom	I-Device
games	I-Device
.	O
</s>
<s>
In	O
Japan	O
,	O
Game	O
Machine	O
listed	O
VS.	O
Ninja	B-Application
JaJaMaru-kun	I-Application
on	O
their	O
May	O
15	O
,	O
1986	O
issue	O
as	O
being	O
the	O
fifteenth	O
most-successful	O
table	O
arcade	B-Application
unit	O
of	O
the	O
month	O
.	O
</s>
<s>
Digital	O
re-releases	O
of	O
Ninja	B-Application
JaJaMaru-kun	I-Application
have	O
received	O
a	O
mediocre	O
reception	O
.	O
</s>
<s>
While	O
they	O
praised	O
the	O
game	O
for	O
its	O
easy-to-know	O
controls	O
and	O
good	O
music	O
for	O
an	O
early	O
point	O
in	O
the	O
system	O
's	O
life	O
,	O
they	O
said	O
that	O
it	O
was	O
a	O
generally	O
unappealing-looking	O
game	O
and	O
that	O
its	O
gameplay	O
was	O
tedious	O
and	O
boring	O
,	O
mockingly	O
commenting	O
:	O
"	O
Ninja	B-Application
Jajamaru-kun	I-Application
is	O
tedious	O
and	O
ugly	O
,	O
and	O
it	O
actually	O
induces	O
physical	O
discomfort	O
.	O
</s>
<s>
In	O
a	O
2011	O
retrospective	O
review	O
,	O
Hardcore	O
Gaming	O
101	O
stated	O
that	O
while	O
Ninja	B-Application
JaJaMaru-kun	I-Application
was	O
a	O
fun	O
game	O
,	O
namely	O
with	O
the	O
amount	O
of	O
ways	O
to	O
defeat	O
the	O
enemies	O
,	O
it	O
suffered	O
from	O
choppy	O
sprite	O
animation	O
and	O
stiff	O
controls	O
,	O
although	O
claimed	O
the	O
latter	O
was	O
a	O
significant	O
improvement	O
over	O
the	O
Family	O
Computer	O
port	O
of	O
Ninja-Kid	B-Application
.	O
</s>
<s>
They	O
also	O
wrote	O
that	O
its	O
quality	O
"	O
has	O
the	O
feel	O
of	O
an	O
NES	O
arcade	B-Application
game	O
port	O
in	O
a	O
way	O
"	O
,	O
comparing	O
it	O
unfavorably	O
to	O
games	O
like	O
Ghosts'n	O
Goblins	O
and	O
Super	O
Mario	O
Bros	O
..	O
</s>
