<s>
is	O
a	O
1993	O
platform	O
game	O
developed	O
and	O
published	O
by	O
Konami	O
for	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
.	O
</s>
<s>
Rocket	B-Application
Knight	I-Application
Adventures	I-Application
was	O
designed	O
by	O
Nobuya	O
Nakazato	O
,	O
designer	O
of	O
Contra	B-Application
games	O
such	O
as	O
The	B-Application
Alien	I-Application
Wars	I-Application
,	O
Hard	B-Application
Corps	I-Application
and	O
Shattered	B-Application
Soldier	I-Application
.	O
</s>
<s>
The	O
game	O
involves	O
Sparkster	B-Application
,	O
an	O
opossum	O
knight	O
who	O
wields	O
a	O
rocket	O
pack	O
and	O
sword	O
that	O
can	O
emit	O
energy	O
projectiles	O
as	O
he	O
attempts	O
to	O
stop	O
the	O
Devotindos	O
Empire	O
,	O
an	O
evil	O
empire	O
that	O
attempts	O
to	O
break	O
the	O
seal	O
of	O
a	O
powerful	O
starship	O
that	O
has	O
the	O
ability	O
to	O
destroy	O
planets	O
.	O
</s>
<s>
Rocket	B-Application
Knight	I-Application
Adventures	I-Application
is	O
a	O
side-scrolling	O
platform	O
game	O
where	O
the	O
player	O
guides	O
Sparkster	B-Application
through	O
linear	O
levels	O
.	O
</s>
<s>
The	O
player	O
can	O
jump	O
and	O
attack	O
using	O
Sparkster	B-Application
's	O
sword	O
,	O
which	O
can	O
either	O
hit	O
enemies	O
directly	O
or	O
by	O
emitting	O
energy	O
projectiles	O
that	O
travel	O
a	O
short	O
distance	O
.	O
</s>
<s>
If	O
the	O
Attack	O
button	O
is	O
held	O
until	O
the	O
blue	O
bar	O
on	O
the	O
top	O
of	O
the	O
screen	O
is	O
filled	O
in	O
,	O
Sparkster	B-Application
will	O
charge	O
a	O
"	O
rocket	O
attack	O
"	O
.	O
</s>
<s>
When	O
the	O
player	O
lets	O
go	O
of	O
the	O
Attack	O
button	O
,	O
Sparkster	B-Application
will	O
perform	O
a	O
rocket	O
attack	O
where	O
he	O
blasts	O
into	O
one	O
of	O
eight	O
directions	O
where	O
the	O
player	O
has	O
inputted	O
on	O
the	O
directional	O
pad	O
(	O
if	O
no	O
direction	O
is	O
pressed	O
,	O
Sparkster	B-Application
will	O
perform	O
a	O
stationary	O
spinning	O
attack	O
)	O
.	O
</s>
<s>
Sparkster	B-Application
has	O
a	O
limited	O
amount	O
of	O
vitality	O
that	O
decreases	O
when	O
he	O
is	O
hit	O
by	O
enemies	O
,	O
projectiles	O
or	O
stage	O
hazards	O
.	O
</s>
<s>
The	O
player	O
will	O
lose	O
one	O
life	O
if	O
either	O
the	O
vitality	O
bar	O
depletes	O
,	O
Sparkster	B-Application
falls	O
into	O
a	O
bottomless	O
pit	O
or	O
outside	O
the	O
stage	O
(	O
in	O
the	O
fourth	O
stage	O
and	O
during	O
the	O
Axel	O
fight	O
in	O
the	O
seventh	O
stage	O
)	O
,	O
touches	O
the	O
spikes	O
in	O
the	O
cart	O
segment	O
of	O
the	O
second	O
stage	O
or	O
touches	O
the	O
lava	O
at	O
the	O
beginning	O
of	O
the	O
third	O
stage	O
.	O
</s>
<s>
Sparkster	B-Application
can	O
replenish	O
vitality	O
by	O
collecting	O
apples	O
and	O
bananas	O
(	O
apples	O
restore	O
a	O
small	O
number	O
of	O
hit	O
points	O
while	O
bananas	O
restore	O
a	O
large	O
number	O
of	O
hit	O
points	O
)	O
.	O
</s>
<s>
Some	O
sections	O
of	O
the	O
game	O
are	O
played	O
similar	O
to	O
horizontal	O
scrolling	O
shooters	O
(	O
akin	O
to	O
Gradius	B-Application
,	O
often	O
with	O
in-level	O
references	O
to	O
that	O
game	O
)	O
,	O
while	O
the	O
boss	O
fight	O
of	O
the	O
fifth	O
stage	O
has	O
the	O
player	O
controlling	O
a	O
large	O
robot	O
mech	O
to	O
duel	O
with	O
the	O
antagonist	O
Axel	O
Gear	O
.	O
</s>
<s>
Knowing	O
the	O
Pig	O
Star	O
would	O
be	O
sought	O
by	O
the	O
evil	O
,	O
the	O
King	O
had	O
magically	O
sealed	O
the	O
starship	O
and	O
protected	O
the	O
"	O
Key	O
to	O
the	O
Seal	O
"	O
by	O
having	O
it	O
guarded	O
and	O
passed	O
by	O
his	O
royal	O
family	O
over	O
generations	O
,	O
and	O
forming	O
an	O
elite	O
group	O
of	O
warriors	O
known	O
as	O
the	O
Rocket	B-Application
Knights	I-Application
to	O
protect	O
the	O
kingdom	O
.	O
</s>
<s>
Around	O
this	O
time	O
,	O
an	O
orphan	O
named	O
Sparkster	B-Application
was	O
taken	O
in	O
by	O
Mifune	O
Sanjulo	O
;	O
a	O
friend	O
of	O
the	O
King	O
,	O
and	O
current	O
leader	O
of	O
the	O
"	O
Rocket	B-Application
Knights	I-Application
"	O
.	O
</s>
<s>
Sparkster	B-Application
was	O
trained	O
to	O
become	O
a	O
Rocket	B-Application
Knight	I-Application
at	O
an	O
early	O
age	O
.	O
</s>
<s>
Sparkster	B-Application
would	O
become	O
the	O
new	O
leader	O
of	O
the	O
Rocket	B-Application
Knights	I-Application
after	O
banishing	O
Axel	O
Gear	O
from	O
Zephyrus	O
,	O
a	O
corrupt	O
"	O
Black	O
Knight	O
"	O
,	O
for	O
destroying	O
Mifune	O
.	O
</s>
<s>
Sparkster	B-Application
heads	O
to	O
the	O
Zephyrus	O
castle	O
to	O
find	O
Axel	O
Gear	O
kidnapping	O
Princess	O
Sherry	O
,	O
who	O
is	O
the	O
one	O
who	O
knows	O
the	O
location	O
to	O
the	O
key	O
.	O
</s>
<s>
Before	O
Sparkster	B-Application
is	O
able	O
to	O
catch	O
Axel	O
,	O
Axel	O
escapes	O
into	O
a	O
large	O
airship	O
and	O
blows	O
Sparkster	B-Application
away	O
to	O
a	O
nearby	O
desert	O
,	O
prompting	O
Sparkster	B-Application
to	O
chase	O
Axel	O
.	O
</s>
<s>
Sparkster	B-Application
eventually	O
reaches	O
the	O
Kingdom	O
of	O
Devotindos	O
,	O
and	O
reaches	O
the	O
Devontindos	O
castle	O
to	O
confront	O
Devilgus	O
.	O
</s>
<s>
Sparkster	B-Application
frees	O
Sherry	O
,	O
however	O
Devilgus	O
,	O
having	O
obtained	O
the	O
Key	O
,	O
escapes	O
into	O
space	O
to	O
reach	O
the	O
Pig	O
Star	O
.	O
</s>
<s>
Sherry	O
casts	O
a	O
spell	O
on	O
Sparkster	B-Application
's	O
rocket	O
pack	O
that	O
allows	O
him	O
to	O
chase	O
Devilgus	O
.	O
</s>
<s>
After	O
a	O
fight	O
with	O
Devilgus	O
in	O
the	O
Pig	O
Star	O
,	O
it	O
is	O
revealed	O
that	O
Devilgus	O
is	O
a	O
robot	O
;	O
Sparkster	B-Application
manages	O
to	O
defeat	O
him	O
either	O
way	O
.	O
</s>
<s>
After	O
a	O
melee	O
fight	O
with	O
Axel	O
Gear	O
,	O
Sparkster	B-Application
eventually	O
confronts	O
Devilgus	O
in	O
his	O
true	O
form	O
.	O
</s>
<s>
Sparkster	B-Application
defeats	O
Devilgus	O
,	O
causing	O
the	O
Pig	O
Star	O
to	O
explode	O
.	O
</s>
<s>
Sparkster	B-Application
escapes	O
in	O
a	O
nearby	O
escape	O
pod	O
,	O
however	O
Devilgus	O
attempts	O
a	O
last-ditch	O
effort	O
to	O
kill	O
Sparkster	B-Application
in	O
the	O
escape	O
pod	O
.	O
</s>
<s>
Sparkster	B-Application
lands	O
back	O
safely	O
in	O
Zephyrus	O
,	O
reunites	O
Princess	O
Sherry	O
with	O
King	O
Zebulos	O
and	O
flies	O
off	O
elsewhere	O
.	O
</s>
<s>
Rocket	B-Application
Knight	I-Application
Adventures	I-Application
was	O
well	O
received	O
by	O
critics	O
,	O
who	O
praised	O
the	O
music	O
and	O
graphics	O
.	O
</s>
<s>
A	O
SNES	B-Application
version	O
of	O
Rocket	B-Application
Knight	I-Application
Adventures	I-Application
was	O
planned	O
but	O
was	O
never	O
released	O
.	O
</s>
<s>
The	O
Sparkster	B-Application
character	O
would	O
be	O
advertised	O
as	O
Konami	O
's	O
mascot	O
,	O
appearing	O
on	O
several	O
Konami	O
advertisements	O
and	O
game	O
manuals	O
.	O
</s>
<s>
The	O
game	O
would	O
be	O
followed	O
by	O
a	O
direct	O
sequel	O
,	O
Sparkster	B-Application
:	I-Application
Rocket	I-Application
Knight	I-Application
Adventures	I-Application
2	I-Application
on	O
the	O
Sega	B-Operating_System
Genesis	I-Operating_System
in	O
1994	O
.	O
</s>
<s>
A	O
spin-off	O
game	O
,	O
Sparkster	B-Application
,	O
would	O
be	O
released	O
in	O
the	O
same	O
year	O
for	O
the	O
Super	B-Application
Nintendo	I-Application
Entertainment	I-Application
System	I-Application
.	O
</s>
<s>
A	O
revival	O
of	O
the	O
series	O
,	O
Rocket	B-Application
Knight	I-Application
was	O
released	O
in	O
2010	O
,	O
developed	O
by	O
British	O
studio	O
Climax	O
Group	O
and	O
was	O
released	O
for	O
Xbox	B-Operating_System
360	I-Operating_System
,	O
PlayStation	B-Operating_System
3	I-Operating_System
and	O
Steam	B-Application
.	O
</s>
<s>
Sparkster	B-Application
has	O
appeared	O
as	O
a	O
playable	O
character	O
in	O
games	O
such	O
as	O
New	B-Application
International	I-Application
Track	I-Application
&	I-Application
Field	I-Application
for	O
Nintendo	B-Device
DS	I-Device
and	O
Krazy	O
Kart	O
Racing	O
for	O
iPhone	B-Device
and	O
iPod	B-Device
Touch	I-Device
.	O
</s>
<s>
He	O
also	O
has	O
cameos	O
in	O
Ganbare	O
Goemon	O
2	O
:	O
Kiteretsu	O
Shōgun	O
Magginesu	O
for	O
the	O
SNES	B-Application
,	O
Snatcher	B-Application
for	O
the	O
Mega-CD	B-Device
,	O
Jikkyō	B-Application
Power	I-Application
Pro	I-Application
Wrestling	I-Application
'	I-Application
96	I-Application
:	I-Application
Max	I-Application
Voltage	I-Application
for	O
the	O
SNES	B-Application
,	O
Mitsumete	B-Application
Knight	I-Application
for	O
the	O
PlayStation	B-Device
,	O
he	O
was	O
disguised	O
by	O
Pastel	O
in	O
TwinBee	O
PARADISE	O
in	O
Donburishima	O
for	O
PC	O
,	O
and	O
a	O
figure	O
resembling	O
him	O
also	O
appears	O
in	O
an	O
alternate	O
ending	O
to	O
Contra	B-Application
:	I-Application
Shattered	I-Application
Soldier	I-Application
for	O
the	O
PlayStation	B-Device
2	I-Device
,	O
and	O
as	O
nonogram	O
pixel	O
on	O
Pixel	O
Puzzle	O
Collection	O
for	O
the	O
iPhone	B-Device
and	O
Android	B-Application
.	O
</s>
