Home computers Under license from
Konami,
Ocean Software produced
ports under the title of
Gryzor (the European arcade title) for the
ZX Spectrum,
Commodore 64, and
Amstrad CPC, which were released in Europe in 1988. The Commodore 64 version was released in North America under the
Contra title. Ocean's ports were patterned after the original arcade version of the game. An IBM PC version was developed by Banana Development Inc and released in North America. This version was released in Europe under the
Gryzor name. The cover illustration of Ocean's
Gryzor ports by Bob Wakelin was inspired by the then upcoming film
Predator starring actor
Arnold Schwarzenegger . The illustration was later used for the packaging of the NES version. The Japanese MSX2 version had an exclusive photo cover; despite that, Wakelin's illustration was used in the back cover. The other character was inspired by the 1982 film
Rambo starring actor
Sylvester Stallone. A
clone game,
The Contras, was released for the
TRS-80 Color Computer by Sundog Systems.
Nintendo Entertainment System Contra was released for the
Nintendo Entertainment System in North America in February 1988. This version was produced in-house by Konami, and features several differences from the arcade release in order to better suit the NES's hardware. This version was released for arcades by
Nintendo in 1988.
Graphics For example, sprites for effects (like explosions) are shown at 30fps instead of 60fps to work around the sprite limitations of the system. Another game to use this technique is
Recca. The game can be played by one or two players, but due to the graphical limitations of the NES, Bill and Lance lost their individualized character designs. Instead, they are both depicted as shirtless commandos distinguished by the colors of their pants (blue for Bill and red for Lance). When one player loses all of their lives, they are given the option to use the other player's stock to keep fighting.
Weapons The power-up icons for the Machine Gun and Laser Gun were also changed and are now represented by letter-based falcon symbols (M and L) used by the other weapons. The Rapid Bullets and Barrier power-ups are also more common in this version, since unlike the arcade game, the flying item capsules now appear regardless of which weapon the player character currently possesses. The NES version introduces a seventh item that clears the screen of all on-screen enemies when obtained.
Reworked stages The NES version recomposes the seven stages of the arcade version into eight stages. Stages 2 and 3 were combined into one stage, resulting in the renumbering of the Waterfall level from Stage 4 to Stage 3, while Stages 5 and 6 were combined into the new Stage 4. The final four stages of the NES version (the Snowfield, Energy Zone, Hangar, and Alien Lair) are based on the different areas featured in the arcade version's final stage. The level designs themselves are drastically different from the arcade version too. The two base stages for example (Stage 2 and 4), no longer have their mazelike structures, nor is there any time limit involved. The boss of the waterfall stage was also changed from a diamond-shaped sensor to an alien statue.
The Konami Code Contra was one of the early NES games to feature the
Konami Code. Inputting the code at the title screen starts the player with thirty lives instead of the usual three. The cheat remains in effect when the player runs out of lives and uses a continue to retry a stage.
Famicom version Contra was released for the Famicom in Japan on February 9, 1988. The game begins with a prologue sequence explaining the game's backstory, followed by a map of the Galuga archipelago, which is shown at the start of every stage to indicate the player's progress. Cutscenes are also shown between stages, depicting Bill (or Lance) giving a status report of his current situation to headquarters, and, in later stages, shooting his gun towards the screen. The ending sequence is also slightly different. And if the player holds the select and start buttons during the credits sequence, a secret message will be displayed after the Konami logo. Other differences include the addition of a sound test mode, added background animations in certain stages (such as windblown palm leaves in Stage 1 and a snowstorm in Stage 5), a different stage clear jingle when the player clears the final stage, and a level select cheat code.
PAL version Probotector is a modified version of the NES
Contra that was released for the
PAL region on December 28, 1990. This version redesigns the human protagonists and some of the enemy characters to give them a robotic appearance. The change was done to circumvent the
BPjM's censorship laws in
Germany, which prohibits the sales of violent video games to minors. Subsequent
Contra games for home consoles followed suit, all being released in the PAL region under the
Probotector title and featuring similar modifications. Beginning with
Contra: Legacy of War, Konami abandoned the
Probotector title and localized most of the further games with minimal changes.
MSX2 An
MSX2 version of
Contra was released by Konami exclusively in Japan on May 26, 1989. The MSX2 version greatly differs from the arcade and NES versions. Due to hardware limitations of the MSX2, the game does not scroll but instead uses
flip-screens like other MSX2 games such as
Metal Gear and
Vampire Killer. The game uses the SCC sound chip. Rather than one-hit kills, there is an energy gauge, which allows Bill Rizer to take more than one shot or hit before losing a life. There are two main power-ups in the MSX2 version, a Falcon-shaped power-up that increases the player's running and shooting speed, as well as a gun-shaped power-up which allows the player to change their current weapon. After picking up the weapon power-up, the player can choose between the default Normal Gun or four other weapons. The shotgun is not featured in this version, replaced by the Rear Gun similar to the tailgun in
Gradius II, which fires in two directions at the same time. The MSX2 version
Contra is composed of 19 stages. Stages 1 through 6 are drawn directly from the arcade version, whereas Stages 7 through 9 are based on the different areas featured in the final stage of the arcade version in a matter similar to the final four stages of the NES version. Stages 10 through 19 are new to this version and take place primarily in an underground facility underneath the Galuga Archipelago. Unlike the arcade and NES versions, the MSX2 version is single-player only (Lance Bean does not appear in any form), and has no continuation feature; if a player loses all lives, the game will end immediately. However, the
Game Master II utility cartridge can be used to save progress via its
S-RAM backup feature.
Later releases • A
PlayStation 2 port of the arcade version of
Contra was released in Japan on May 25, 2006, as part of the
Oretachi Gēsen Zoku series of retro game ports by
Hamster Corporation. • A second re-release was made for the
Xbox 360's
Live Arcade on November 8 of the same year, with
Digital Eclipse handling the conversion. The same version was also released on December 15, 2009, as part of the
Konami Classics Vol. 2 compilation. • The arcade version was also included in Konami's classic game compilation
Konami Classics Series: Arcade Hits for the
Nintendo DS. • During Konami Mobile's tenure, several variations of
Contra were released for different mobile phones, which are based on the arcade version. • The NES version of
Contra is included in the video game compilation ''Konami Collector's Series: Castlevania & Contra
for Microsoft Windows, released in North America in 2002, which also includes Super C
and the three Castlevania'' games released for the NES. • The NES
Contra and
Super C are included in
Contra 4 for the Nintendo DS as unlockable bonuses. • The MSX2 version of
Contra was released for the
Virtual Console in Japan on February 2, 2010 for the
Wii and on October 15, 2014 for the
Wii U. • The arcade version of
Contra was released for the
PlayStation 4 as part of Hamster's
Arcade Archives lineup of digital releases in 2016, and also released for the
Nintendo Switch in 2020. It includes the option to play both the Japanese and US versions. • The arcade, NES, and Famicom versions are included in
Contra Anniversary Collection, which was developed by
M2 and released in June 2019 for the PlayStation 4, Nintendo Switch,
Xbox One and PC via
Steam to commemorate Konami's 50th anniversary. • On July 15, 2019, My Arcade announced its acquisition of the
Contra license for its line of Micro Player mini arcade machine replicas, and Pocket Player portable video game players. • A reimagined version titled
Contra: Operation Galuga was developed by
WayForward, the developers of
Contra 4, in conjunction with Konami and released in March 2024. ==Reception==