Ikari Warriors

SNK

Industry	Video game development and publishing
Founded	1978 in Japan
Founder	Eikichi Kawasaki
Headquarters	Japan
Products	Ikari Warriors, TNK III, Metal Slug series, King of Fighters series

Ikari Warriors, known in Japan as , is a 1986 run and gun video game created and distributed by SNK for arcade platforms. In North America, it was published by Tradewest. Among the numerous Commando inspired imitations, Ikari Warriors distinguished itself through its innovative rotary joystick mechanism and the inclusion of a cooperative two-player mode. This rotary joystick concept was adapted from SNK's earlier title TNK III (1985). Initially, the project was intended to be an officially licensed adaptation of the movie Rambo: First Blood Part II (1985), but SNK was unable to obtain the necessary rights.

The title enjoyed substantial commercial success within arcades. It ranked as Japan's second highest-earning table arcade game in 1986 and secured third place in London's arcade revenue that same year. In the United States, it marked a significant milestone for SNK, consistently appearing among the top five highest-grossing dedicated arcade games during both 1986 and 1987.

Gameplay

Players assume control of commandos Colonel Ralf Jones (red outfit) and Second Lieutenant Clark Still (blue outfit) on a mission to infiltrate the village of Ikari and rescue Colonel Cook. Throughout their journey, they confront enemy infantry, tanks, and helicopters, utilizing various power-ups to aid their advancement.

The action progresses vertically from the bottom toward the top of the screen, with adversaries obstructing the path. Players have the ability to seize control of enemy tanks and helicopters (in the NES version) to bolster their offensive capabilities. Tanks provide bulletproof protection but are limited by fuel constraints and can detonate, necessitating timely dismounting. Helicopters are equipped with two armaments—a spread gun and a cannon—and can traverse over water obstacles.

The joystick permits independent rotation of the character’s facing direction separate from movement, enabling attacks in eight distinct directions. Characters wield a machine gun with their right hand while throwing grenades with their left. If players progress too slowly, an automated “call for fire” targets them, increasing gameplay pace.

Hardware

Ikari Warriors utilizes SNK’s LS-30 joysticks featuring a 12-way rotary switch that combines rotation with eight-directional movement—a control scheme first introduced in SNK’s 1985 release TNK III. The control panel includes two buttons: one dedicated to firing and another for grenade deployment.

The game’s printed circuit boards (PCBs) were manufactured in two variants: SNK pinout and JAMMA pinout. The SNK-pinout PCBs, mainly employed in dedicated arcade cabinets, feature 22/44-pin edge connectors; conversely, JAMMA-pinout PCBs, generally provided as conversion kits, use 28/56-pin connectors. Both types consist of three vertically stacked boards interconnected to function cohesively.

Development

Developed by SNK under the direction and design leadership of Koji Obada—who had previously crafted SNK’s TNK III (1985), a vertical tank shooter employing rotary joystick controls—Ikari Warriors merges the run-and-gun gameplay style popularized by Capcom's 1985 title Commando with rotary joysticks and tank vehicles reminiscent of T.A.N.K. Drawing inspiration from the action film Rambo: First Blood Part II (1985), it was initially titled Rambo: Ikari no Dasshutsu in Japan. Obada sought an official Rambo license; however, SNK failed to secure these rights at first, resulting in the abbreviated title Ikari. Following its North American arcade launch, SNK approached Sylvester Stallone to obtain licensing permission, but since the game had already been established under the name Ikari, it was ultimately released officially in North America as Ikari Warriors.

Regional variations

For Western audiences, character names were modified: Ralf and Clark were renamed Paul and Vince. The military leader saved at the conclusion of the game is called General Kawasaki in Japan—named in honor of SNK's founder Eikichi Kawasaki—whereas in the US and Europe, he is Colonel Cook, named after Tradewest's founder Leland Cook. The NES edition retained the original General Kawasaki name. A notable detail is that adversaries were portrayed as Neo-Nazis, evidenced by a swastika symbol displayed in the final chamber.

Ports

Ikari Warriors initially saw ports to Apple II, Commodore 64, and IBM PC platforms, handled by Quicksilver Software and released by Data East USA in 1986. Elite Systems acquired European rights, issuing an Amstrad CPC version later that same year. A ZX Spectrum version developed by David Perry was slated for release in November 1986 but ultimately did not materialize.

In 1988, Elite Systems introduced a second Commodore 64 conversion programmed by John Twiddy (known for The Last Ninja), a new ZX Spectrum port by David Shea (who also developed the Amstrad version), along with editions for Commodore 16, Amiga, and Atari ST. SNK produced an MSX port in 1987. The NES adaptation was created by Micronics. Ports for the Atari 2600 and 7800 followed in 1990, marking some of the final releases for those consoles. Additionally, Ikari Warriors is part of the modern SNK 40th Anniversary Collection, available on contemporary consoles and Windows via Steam.

Reception

In Japan, Game Machine ranked Ikari Warriors as the leading table arcade game throughout March 1986, maintaining this status into April and early May before reclaiming the top spot in June. It finished as the second highest-grossing table arcade title in Japan for 1986. In the United Kingdom, it ranked among the three highest-earning arcade games of 1986 in London, securing third place on Electrocoin’s annual chart.

Across North America, Ikari Warriors achieved the position of second highest-grossing arcade game on Play Meter charts in July 1986. It was listed within the top five highest-grossing dedicated arcade games of that year according to AMOA and placed eighth among arcade video games on RePlay charts. The title sustained its presence as a top-five dedicated arcade game into 1987.

In 1996, Next Generation magazine positioned the arcade version of Ikari Warriors at number 61 in their "Top 100 Games of All Time," commending its pioneering joystick controls, well-balanced gameplay mechanics, and power-ups that augmented player abilities without diminishing difficulty.

Conversions

The Computer and Video Games magazine lauded the Amstrad PC conversion as "classy," emphasizing its "simply brilliant" visual presentation and "awesomely addictive" gameplay experience. They remarked that this version closely mirrored the arcade original's graphics and playability, setting a high benchmark for subsequent ports.

The IBM PC edition received a rating of four out of five stars from Dragon, indicating strong approval within the PC gaming community.

Legacy

The success of Ikari Warriors spawned sequels including Victory Road (1986) and Ikari III: The Rescue (1989), further developing the franchise.

In 1987, SNK released Guerrilla War (titled Guevara in Japan), an Ikari Warriors-style action game featuring communist revolutionaries Che Guevara and Fidel Castro as main characters.

Interestingly, actor Sylvester Stallone, whose portrayal of John Rambo inspired aspects of the game's theme, owned an Ikari Warriors arcade cabinet during the 1980s. Additionally, future mixed martial arts legend Kazushi Sakuraba was known to be an enthusiastic player during his youth.

Characters Ralf and Clark returned in later SNK releases such as Metal Slug 6, 7, and entries in the King of Fighters series. Their names were also reused for minor roles in Crystalis, while they made cameo appearances as background figures in Super Smash Bros. Ultimate, specifically within the King Of Fighters Stadium stage.

See also

• Front Line, an arcade title from 1982 featuring similar gameplay aspects such as rotary controls and maneuverable tanks.
• Time Soldiers, a 1987 arcade shooter by SNK that shares analogous gameplay characteristics.