<s>
is	O
a	O
run	O
and	O
gun	O
video	O
game	O
developed	O
and	O
published	O
by	O
Konami	O
,	O
originally	O
developed	O
as	O
a	O
coin-operated	O
arcade	B-Application
video	I-Application
game	I-Application
in	O
1986	O
and	O
released	O
on	O
February	O
20	O
,	O
1987	O
.	O
</s>
<s>
A	O
home	O
version	O
was	O
released	O
for	O
the	O
Nintendo	O
Entertainment	O
System	O
in	O
1988	O
,	O
along	O
with	O
ports	O
for	O
various	O
home	O
computer	O
formats	O
,	O
including	O
the	O
MSX2	B-Operating_System
.	O
</s>
<s>
The	O
arcade	B-Application
and	O
computer	O
versions	O
were	O
localized	O
as	O
Gryzor	B-Application
in	O
Europe	O
,	O
and	O
the	O
NES	O
version	O
as	O
Probotector	B-Application
in	O
PAL	O
regions	O
.	O
</s>
<s>
The	O
arcade	B-Application
game	O
was	O
a	O
commercial	O
success	O
worldwide	O
,	O
becoming	O
one	O
of	O
the	O
top	O
four	O
highest-grossing	O
dedicated	O
arcade	B-Application
games	I-Application
of	I-Application
1987	I-Application
in	O
the	O
United	O
States	O
.	O
</s>
<s>
The	O
NES	O
version	O
was	O
also	O
a	O
critical	O
and	O
commercial	O
success	O
,	O
with	O
Electronic	O
Gaming	O
Monthly	O
awarding	O
it	O
for	O
being	O
the	O
Best	B-Application
Action	I-Application
Game	I-Application
of	O
1988	O
.	O
</s>
<s>
Several	O
Contra	B-Application
sequels	O
were	O
produced	O
following	O
the	O
original	O
game	O
.	O
</s>
<s>
Contra	B-Application
employs	O
a	O
variety	O
of	O
playing	O
perspectives	O
,	O
which	O
include	O
a	O
standard	O
side	O
view	O
,	O
a	O
pseudo-3D	O
view	O
(	O
in	O
which	O
the	O
player	O
proceeds	O
by	O
shooting	O
and	O
moving	O
towards	O
the	O
background	O
,	O
in	O
addition	O
to	O
left	O
or	O
right	O
)	O
and	O
a	O
fixed	O
screen	O
format	O
(	O
in	O
which	O
the	O
player	O
has	O
their	O
gun	O
aimed	O
upwards	O
by	O
default	O
)	O
.	O
</s>
<s>
The	O
arcade	B-Application
version	O
of	O
Contra	B-Application
consists	O
of	O
seven	O
stages	O
(	O
the	O
number	O
of	O
stages	O
and	O
level	O
structures	O
vary	O
in	O
later	O
versions	O
)	O
.	O
</s>
<s>
The	O
arcade	B-Application
game	O
was	O
released	O
in	O
three	O
versions	O
.	O
</s>
<s>
However	O
,	O
the	O
European	O
version	O
,	O
titled	O
Gryzor	B-Application
,	O
only	O
allows	O
two	O
players	O
to	O
play	O
the	O
game	O
alternating	O
rather	O
than	O
simultaneously	O
.	O
</s>
<s>
Contra	B-Application
is	O
set	O
in	O
the	O
distant	O
future	O
of	O
the	O
year	O
2633	O
A.D.	O
,	O
when	O
the	O
evil	O
Red	O
Falcon	O
Organization	O
have	O
set	O
a	O
base	O
on	O
the	O
fictional	O
Galuga	O
archipelago	O
near	O
New	O
Zealand	O
in	O
a	O
plot	O
to	O
wipe	O
out	O
humanity	O
.	O
</s>
<s>
Two	O
commandos	O
,	O
Bill	B-Application
Rizer	I-Application
and	I-Application
Lance	I-Application
Bean	I-Application
of	O
the	O
Earth	O
Marine	O
Corp	O
's	O
Contra	B-Application
unit	O
(	O
an	O
elite	O
group	O
of	O
soldiers	O
specializing	O
in	O
guerrilla	O
warfare	O
)	O
,	O
are	O
sent	O
to	O
the	O
island	O
to	O
destroy	O
the	O
enemy	O
forces	O
and	O
uncover	O
the	O
true	O
nature	O
of	O
the	O
alien	O
entity	O
controlling	O
them	O
.	O
</s>
<s>
The	O
promotional	O
materials	O
for	O
the	O
US	O
arcade	B-Application
version	O
downplays	O
the	O
futuristic	O
setting	O
of	O
the	O
game	O
,	O
with	O
the	O
manual	O
for	O
the	O
later	O
NES	O
and	O
home	O
computer	O
versions	O
changing	O
the	O
game	O
's	O
setting	O
from	O
the	O
future	O
to	O
the	O
present	O
day	O
and	O
the	O
location	O
from	O
Galuga	O
to	O
the	O
Amazon	O
Jungle	O
.	O
</s>
<s>
Under	O
license	O
from	O
Konami	O
,	O
Ocean	O
Software	O
produced	O
ports	O
under	O
the	O
title	O
of	O
Gryzor	B-Application
(	O
the	O
European	O
arcade	B-Application
title	O
)	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
Commodore	O
64	O
,	O
and	O
Amstrad	B-Device
CPC	I-Device
,	O
which	O
were	O
released	O
in	O
Europe	O
in	O
1988	O
.	O
</s>
<s>
The	O
Commodore	O
64	O
version	O
was	O
released	O
in	O
North	O
America	O
under	O
the	O
Contra	B-Application
title	O
.	O
</s>
<s>
Ocean	O
's	O
ports	O
were	O
patterned	O
after	O
the	O
original	O
arcade	B-Application
version	O
of	O
the	O
game	O
.	O
</s>
<s>
An	O
IBM	B-Device
PC	I-Device
version	O
was	O
developed	O
by	O
Banana	O
Development	O
Inc	O
and	O
released	O
in	O
North	O
America	O
.	O
</s>
<s>
This	O
version	O
was	O
released	O
in	O
Europe	O
under	O
the	O
Gryzor	B-Application
name	O
.	O
</s>
<s>
The	O
cover	O
illustration	O
of	O
Ocean	O
's	O
Gryzor	B-Application
ports	O
by	O
Bob	O
Wakelin	O
was	O
inspired	O
by	O
different	O
poses	O
of	O
actor	O
Arnold	O
Schwarzenegger	O
from	O
the	O
film	O
Predator	O
.	O
</s>
<s>
The	O
Japanese	O
MSX2	B-Operating_System
version	O
had	O
an	O
exclusive	O
photo	O
cover	O
;	O
despite	O
that	O
,	O
Wakelin	O
's	O
illustration	O
was	O
used	O
in	O
the	O
back	O
cover	O
.	O
</s>
<s>
Contra	B-Application
was	O
released	O
for	O
the	O
Nintendo	O
Entertainment	O
System	O
in	O
North	O
America	O
in	O
February	O
1988	O
.	O
</s>
<s>
This	O
version	O
was	O
produced	O
in-house	O
by	O
Konami	O
and	O
features	O
several	O
differences	O
from	O
the	O
arcade	B-Application
release	O
in	O
order	O
to	O
better	O
suit	O
the	O
NES	O
's	O
hardware	O
.	O
</s>
<s>
Another	O
game	O
to	O
use	O
this	O
technique	O
is	O
Recca	B-Application
.	O
</s>
<s>
The	O
Rapid	O
Bullets	O
and	O
Barrier	O
power-ups	O
are	O
also	O
more	O
common	O
in	O
this	O
version	O
,	O
since	O
unlike	O
the	O
arcade	B-Application
game	O
,	O
the	O
flying	O
item	O
capsules	O
now	O
appear	O
regardless	O
of	O
which	O
weapon	O
the	O
player	O
character	O
currently	O
possesses	O
.	O
</s>
<s>
The	O
NES	O
version	O
recomposes	O
the	O
seven	O
stages	O
of	O
the	O
arcade	B-Application
version	O
into	O
eight	O
stages	O
.	O
</s>
<s>
The	O
final	O
four	O
stages	O
of	O
the	O
NES	O
version	O
(	O
the	O
Snowfield	O
,	O
Energy	O
Zone	O
,	O
Hangar	O
and	O
Alien	O
Lair	O
)	O
are	O
based	O
on	O
the	O
different	O
areas	O
featured	O
in	O
the	O
arcade	B-Application
version	O
's	O
final	O
stage	O
.	O
</s>
<s>
The	O
level	O
designs	O
themselves	O
are	O
drastically	O
different	O
from	O
the	O
arcade	B-Application
version	O
too	O
.	O
</s>
<s>
Contra	B-Application
was	O
one	O
of	O
the	O
early	O
NES	O
games	O
to	O
feature	O
the	O
Konami	O
Code	O
.	O
</s>
<s>
Contra	B-Application
was	O
released	O
for	O
the	O
Famicom	O
in	O
Japan	O
on	O
February	O
9	O
,	O
1988	O
.	O
</s>
<s>
While	O
the	O
gameplay	O
remains	O
identical	O
to	O
the	O
NES	O
version	O
released	O
around	O
the	O
same	O
month	O
,	O
the	O
Famicom	O
version	O
has	O
a	O
custom-made	O
Multi-Memory	B-General_Concept
Controller	I-General_Concept
that	O
Konami	O
produced	O
called	O
the	O
VRC2	O
(	O
in	O
contrast	O
to	O
the	O
UNROM	O
board	O
used	O
by	O
its	O
NES	O
counterpart	O
)	O
.	O
</s>
<s>
Probotector	B-Application
is	O
a	O
modified	O
version	O
of	O
the	O
NES	O
Contra	B-Application
that	O
was	O
released	O
for	O
the	O
PAL	O
region	O
on	O
December	O
28	O
,	O
1990	O
.	O
</s>
<s>
Subsequent	O
Contra	B-Application
games	O
for	O
home	O
consoles	O
followed	O
suit	O
,	O
all	O
being	O
released	O
in	O
the	O
PAL	O
region	O
under	O
the	O
Probotector	B-Application
title	O
and	O
featuring	O
similar	O
modifications	O
.	O
</s>
<s>
Beginning	O
with	O
Contra	B-Application
:	I-Application
Legacy	I-Application
of	I-Application
War	I-Application
,	O
Konami	O
abandoned	O
the	O
Probotector	B-Application
title	O
and	O
localized	O
most	O
of	O
the	O
further	O
games	O
with	O
minimal	O
changes	O
.	O
</s>
<s>
An	O
MSX2	B-Operating_System
version	O
of	O
Contra	B-Application
was	O
released	O
by	O
Konami	O
exclusively	O
in	O
Japan	O
on	O
May	O
26	O
,	O
1989	O
.	O
</s>
<s>
The	O
MSX2	B-Operating_System
version	O
greatly	O
differs	O
from	O
the	O
arcade	B-Application
and	O
NES	O
versions	O
.	O
</s>
<s>
Due	O
to	O
hardware	O
limitations	O
of	O
the	O
MSX2	B-Operating_System
,	O
the	O
game	O
does	O
not	O
scroll	O
but	O
instead	O
uses	O
flip-screens	O
like	O
other	O
MSX2	B-Operating_System
games	O
such	O
as	O
Metal	B-Application
Gear	I-Application
and	O
Vampire	B-Application
Killer	I-Application
.	O
</s>
<s>
Rather	O
than	O
one-hit	O
kills	O
,	O
there	O
is	O
an	O
energy	O
gauge	O
,	O
which	O
allows	O
Bill	B-Application
Rizer	I-Application
to	O
take	O
more	O
than	O
one	O
shot	O
or	O
hit	O
before	O
losing	O
a	O
life	O
.	O
</s>
<s>
There	O
are	O
two	O
main	O
power-ups	O
in	O
the	O
MSX2	B-Operating_System
version	O
,	O
a	O
Falcon-shaped	O
power-up	O
that	O
increases	O
the	O
player	O
's	O
running	O
and	O
shooting	O
speed	O
,	O
as	O
well	O
as	O
a	O
gun-shaped	O
power-up	O
which	O
allows	O
the	O
player	O
to	O
change	O
their	O
current	O
weapon	O
.	O
</s>
<s>
The	O
Spread	O
Gun	O
is	O
not	O
featured	O
in	O
this	O
version	O
,	O
replaced	O
by	O
the	O
Rear	O
Gun	O
similar	O
to	O
the	O
tailgun	O
in	O
Gradius	B-Application
II	I-Application
,	O
which	O
fires	O
in	O
two	O
directions	O
at	O
the	O
same	O
time	O
.	O
</s>
<s>
The	O
MSX2	B-Operating_System
version	O
Contra	B-Application
is	O
composed	O
of	O
19	O
stages	O
.	O
</s>
<s>
Stages	O
1	O
through	O
6	O
are	O
drawn	O
directly	O
from	O
the	O
arcade	B-Application
version	O
,	O
whereas	O
Stages	O
7	O
through	O
9	O
are	O
based	O
on	O
the	O
different	O
areas	O
featured	O
in	O
the	O
final	O
stage	O
of	O
the	O
arcade	B-Application
version	O
in	O
a	O
matter	O
similar	O
to	O
the	O
final	O
four	O
stages	O
of	O
the	O
NES	O
version	O
.	O
</s>
<s>
Unlike	O
the	O
arcade	B-Application
and	O
NES	O
versions	O
,	O
the	O
MSX2	B-Operating_System
version	O
is	O
single-player	O
only	O
(	O
Lance	B-Application
Bean	I-Application
does	O
not	O
appear	O
in	O
any	O
form	O
)	O
,	O
and	O
has	O
no	O
continuation	O
feature	O
;	O
if	O
a	O
player	O
loses	O
all	O
lives	O
,	O
the	O
game	O
will	O
end	O
immediately	O
.	O
</s>
<s>
A	O
PlayStation	B-Device
2	I-Device
port	O
of	O
the	O
arcade	B-Application
version	O
of	O
Contra	B-Application
was	O
released	O
in	O
Japan	O
on	O
May	O
25	O
,	O
2006	O
,	O
as	O
part	O
of	O
the	O
Oretachi	O
Gēsen	O
Zoku	O
series	O
of	O
retro	O
game	O
ports	O
by	O
Hamster	O
.	O
</s>
<s>
A	O
second	O
re-release	O
was	O
made	O
for	O
the	B-Operating_System
Xbox	I-Operating_System
360	I-Operating_System
's	O
Live	B-Device
Arcade	I-Device
on	O
November	O
8	O
of	O
the	O
same	O
year	O
,	O
with	O
Digital	O
Eclipse	O
handling	O
the	O
conversion	O
.	O
</s>
<s>
The	O
same	O
version	O
was	O
also	O
released	O
on	O
December	O
15	O
,	O
2009	O
,	O
as	O
part	O
of	O
the	O
Konami	B-Application
Classics	I-Application
Vol	O
.	O
</s>
<s>
The	O
arcade	B-Application
version	O
was	O
also	O
included	O
in	O
Konami	O
's	O
classic	O
game	O
compilation	O
Konami	B-Device
Classics	I-Device
Series	I-Device
:	I-Device
Arcade	I-Device
Hits	I-Device
for	O
the	O
Nintendo	B-Device
DS	I-Device
.	O
</s>
<s>
During	O
Konami	O
Mobile	O
's	O
tenure	O
,	O
several	O
variations	O
of	O
Contra	B-Application
were	O
released	O
for	O
different	O
mobile	O
phones	O
,	O
based	O
on	O
the	O
arcade	B-Application
version	O
.	O
</s>
<s>
The	O
NES	O
version	O
of	O
Contra	B-Application
is	O
included	O
in	O
the	O
video	O
game	O
compilation	O
Konami	O
Collector	O
's	O
Series	O
:	O
Castlevania	B-Application
&	O
Contra	B-Application
for	O
Microsoft	B-Application
Windows	I-Application
,	O
released	O
in	O
North	O
America	O
in	O
2002	O
,	O
which	O
also	O
includes	O
Super	B-Application
C	I-Application
and	O
the	O
three	O
Castlevania	B-Application
games	O
released	O
for	O
the	O
NES	O
.	O
</s>
<s>
The	O
NES	O
Contra	B-Application
and	O
Super	B-Application
C	I-Application
are	O
included	O
in	O
the	O
Nintendo	B-Device
DS	I-Device
game	O
Contra	B-Application
4	I-Application
as	O
hidden	O
bonuses	O
.	O
</s>
<s>
The	O
MSX2	B-Operating_System
version	O
of	O
Contra	B-Application
was	O
released	O
for	O
the	O
Virtual	B-Application
Console	I-Application
in	O
Japan	O
on	O
February	O
2	O
,	O
2010	O
for	O
the	B-Operating_System
Wii	I-Operating_System
and	O
on	O
October	O
15	O
,	O
2014	O
for	O
the	B-Operating_System
Wii	I-Operating_System
U	O
.	O
</s>
<s>
The	O
arcade	B-Application
version	O
of	O
Contra	B-Application
was	O
released	O
for	O
the	B-Operating_System
PlayStation	I-Operating_System
4	I-Operating_System
as	O
part	O
of	O
Hamster	O
's	O
Arcade	B-Application
Archives	I-Application
digital	O
releases	O
in	O
2016	O
.	O
</s>
<s>
The	O
arcade	B-Application
,	O
NES	O
,	O
and	O
Famicom	O
versions	O
are	O
included	O
in	O
Contra	B-Application
Anniversary	O
Collection	O
,	O
which	O
was	O
released	O
in	O
June	O
2019	O
for	O
Konami	O
's	O
50th	O
anniversary	O
.	O
</s>
<s>
On	O
July	O
15	O
,	O
2019	O
,	O
My	O
Arcade	B-Application
announced	O
its	O
acquisition	O
of	O
the	O
Contra	B-Application
license	O
for	O
its	O
line	O
of	O
Micro	O
Player	O
mini	O
arcade	B-Application
machine	O
replicas	O
,	O
and	O
Pocket	O
Player	O
portable	O
video	O
game	O
players	O
.	O
</s>
<s>
In	O
Japan	O
,	O
the	O
arcade	B-Application
game	O
topped	O
the	O
Game	O
Machine	O
chart	O
for	O
table	O
arcade	B-Application
cabinets	O
in	O
April	O
1987	O
.	O
</s>
<s>
In	O
the	O
United	O
Kingdom	O
,	O
Gryzor	B-Application
was	O
a	O
blockbuster	O
hit	O
in	O
the	O
arcades	O
and	O
the	O
home	O
computer	O
versions	O
topped	O
the	O
Gallup	O
charts	O
.	O
</s>
<s>
In	O
the	O
United	O
States	O
,	O
Contra	B-Application
became	O
one	O
of	O
the	O
top	O
four	O
highest-grossing	O
dedicated	O
arcade	B-Application
games	I-Application
of	I-Application
1987	I-Application
,	O
and	O
then	O
the	O
1988	O
Nintendo	O
Entertainment	O
System	O
port	O
became	O
and	O
remained	O
widely	O
popular	O
and	O
remembered	O
.	O
</s>
<s>
The	O
arcade	B-Application
game	O
received	O
generally	O
favorable	O
reviews	O
from	O
critics	O
upon	O
release	O
.	O
</s>
<s>
Peter	O
Shaw	O
of	O
Your	O
Sinclair	O
called	O
Gryzor	B-Application
one	O
of	O
his	O
"	O
favourite	O
"	O
games	O
at	O
the	O
time	O
.	O
</s>
<s>
Clare	O
Edgeley	O
of	O
Computer	O
and	O
Video	O
Games	O
said	O
"	O
Lots	O
of	O
shooting	O
and	O
no	O
time	O
for	O
a	O
breather	O
makes	O
Gryzor	B-Application
one	O
hell	O
of	O
a	O
tiring	O
game	O
to	O
play.	O
"	O
</s>
<s>
Arnie	O
Katz	O
,	O
Bill	O
Kunkel	O
and	O
Joyce	O
Worley	O
of	O
Computer	O
Gaming	O
World	O
called	O
Contra	B-Application
on	O
the	O
NES	O
"	O
a	O
truly	O
outstanding	O
action	O
epic	O
"	O
set	O
on	O
a	O
"	O
scrolling	O
and	O
beautifully	O
drawn	O
playfield	O
"	O
.	O
</s>
<s>
Electronic	O
Gaming	O
Monthly	O
awarded	O
it	O
for	O
being	O
the	O
Best	B-Application
Action	I-Application
Game	I-Application
of	O
1988	O
.	O
</s>
<s>
AllGame	O
editor	O
Skyler	O
Miller	O
praised	O
Contra	B-Application
,	O
touting	O
that	O
the	O
game	O
"	O
became	O
the	O
standard	O
by	O
which	O
future	O
platform	O
shooters	O
would	O
be	O
judged	O
"	O
.	O
</s>
<s>
The	O
MS-DOS	B-Application
version	O
of	O
the	O
game	O
received	O
a	O
negative	O
review	O
in	O
Dragon	O
by	O
Hartley	O
,	O
Patricia	O
,	O
and	O
Kirk	O
Lesser	O
in	O
"	O
The	O
Role	O
of	O
Computers	O
"	O
column	O
in	O
1989	O
;	O
they	O
criticized	O
Konami	O
's	O
copy	B-Application
protection	I-Application
which	O
prevented	O
the	O
game	O
from	O
booting	O
up	O
on	O
their	O
computer	O
.	O
</s>
<s>
In	O
2004	O
,	O
the	O
NES	O
version	O
of	O
Contra	B-Application
was	O
inducted	O
into	O
GameSpot	O
's	O
list	O
of	O
the	O
greatest	O
games	O
of	O
all	O
time	O
.	O
</s>
<s>
Contra	B-Application
was	O
voted	O
by	O
gaming	O
website	O
IGN	O
as	O
being	O
the	O
"	O
Toughest	O
Game	O
to	O
Beat	O
"	O
.	O
</s>
<s>
Nintendo	B-Application
Power	I-Application
ranked	O
it	O
as	O
the	O
seventh	O
best	O
NES	O
game	O
,	O
calling	O
it	O
one	O
of	O
the	O
best	O
multiplayer	O
NES	O
games	O
.	O
</s>
<s>
Electronic	O
Gaming	O
Monthly	O
listed	O
the	O
NES	O
version	O
as	O
the	O
45th	O
best	O
console	O
video	O
game	O
of	O
all	O
time	O
,	O
similarly	O
saying	O
that	O
it	O
"	O
set	O
the	O
standard	O
for	O
all	O
two-player	O
simultaneous	O
action	B-Application
games	I-Application
to	O
follow.	O
"	O
</s>
<s>
GamesRadar	O
ranked	O
it	O
the	O
10th	O
best	O
NES	O
game	O
ever	O
made	O
,	O
considering	O
it	O
possibly	O
superior	O
to	O
the	O
arcade	B-Application
version	O
.	O
</s>
<s>
In	O
2017	O
,	O
Contra	B-Application
ranked	O
82nd	O
in	O
"	O
The	O
Scientifically	O
Proven	O
Best	O
Video	O
Games	O
of	O
All	O
Time	O
"	O
,	O
a	O
statistical	O
meta-analysis	O
compiled	O
by	O
Warp	O
Zoned	O
of	O
44	O
"	O
top	O
games	O
"	O
lists	O
published	O
between	O
1995	O
and	O
2016	O
.	O
</s>
<s>
Contra	B-Application
was	O
followed	O
by	O
Super	B-Application
Contra	I-Application
later	O
the	O
same	O
year	O
.	O
</s>
<s>
It	O
is	O
the	O
only	O
Contra	B-Application
sequel	O
for	O
the	O
arcades	O
developed	O
in-house	O
by	O
Konami	O
.	O
</s>
<s>
Following	O
the	O
success	O
of	O
the	O
NES	O
adaptations	O
of	O
both	O
the	O
original	O
and	O
its	O
sequel	O
(	O
which	O
was	O
retitled	O
Super	B-Application
C	I-Application
in	O
its	O
American	O
release	O
)	O
,	O
subsequent	O
sequels	O
were	O
produced	O
specifically	O
for	O
the	O
home	O
console	O
market	O
such	O
as	O
Contra	B-Application
III	I-Application
:	I-Application
The	I-Application
Alien	I-Application
Wars	I-Application
for	O
the	O
Super	B-Application
NES	I-Application
and	O
Contra	B-Application
:	I-Application
Hard	I-Application
Corps	I-Application
for	O
the	O
Genesis	B-Operating_System
,	O
becoming	O
one	O
of	O
Konami	O
's	O
flagship	O
series	O
.	O
</s>
<s>
The	O
music	O
from	O
the	O
arcade	B-Application
version	O
of	O
Contra	B-Application
is	O
one	O
of	O
the	O
soundtracks	O
included	O
in	O
the	O
video	O
game	O
album	O
Konami	O
Game	O
Music	O
Vol.4	O
:	O
A	B-Application
Jax	I-Application
,	O
which	O
was	O
released	O
by	O
Alfa	O
Records	O
on	O
May	O
10	O
,	O
1988	O
,	O
in	O
CD	O
(	O
catalog	O
no	O
.	O
</s>
<s>
28XA-201	O
)	O
,	O
cassette	B-Device
(	O
ALC-22922	O
)	O
,	O
and	O
vinyl	O
(	O
ALR-22922	O
)	O
.	O
</s>
<s>
In	O
April	O
2017	O
,	O
Beijing	O
Starlit	O
Movie	O
and	O
TV	O
Culture	O
announced	O
they	O
were	O
producing	O
a	O
live-action	O
film	O
version	O
of	O
Contra	B-Application
in	O
China	O
.	O
</s>
<s>
While	O
the	O
Konami	O
code	O
was	O
first	O
introduced	O
with	O
the	O
home	O
versions	O
of	O
Gradius	B-Application
,	O
larger	O
awareness	O
of	O
the	O
code	O
's	O
existence	O
in	O
Konami	O
's	O
games	O
grew	O
significantly	O
with	O
its	O
inclusion	O
in	O
the	O
home	O
versions	O
of	O
Contra	B-Application
(	O
where	O
it	O
gave	O
the	O
player	O
30	O
extra	O
lives	O
to	O
help	O
complete	O
the	O
difficult	O
game	O
)	O
.	O
</s>
