Gameplay and design
Metal Slug 7 continues the series' signature run-and-gun gameplay, where players control characters through side-scrolling levels, shooting enemies, dodging bullets, and destroying enemy vehicles. The game features seven levels with three difficulty settings: Novice, Normal, and Hard. Novice offers a friendlier experience for newcomers, while Hard provides a challenge for veterans. Each level is packed with enemies, traps, and boss battles, maintaining the series' high-intensity action.
The most notable feature is the full use of the Nintendo DS's dual screens. The bottom screen displays a real-time map of the level, allowing players to see the entire layout, item locations, and the path forward at any time—a first for the series. This design not only reduces the chance of getting lost but also enables more strategic planning, such as anticipating enemy ambushes or deciding whether to detour for items. The touchscreen map sets the handheld version apart from arcade counterparts, becoming a standout feature.
In terms of weapons, the series' classic arsenal—machine gun, shotgun, flame thrower, and others—returns in full, along with a new weapon called the Lightning Shot. This weapon fires homing electric projectiles that lock onto nearby enemies, dealing continuous damage, and proves highly effective against fast-moving or hard-to-reach foes. The addition of the Lightning Shot adds a new strategic layer to weapon selection, reflecting the developers' intent to innovate within the traditional framework.
Beyond the main mission mode, the game introduces a new Battle School mode, guided by new instructor Cynthia. This mode includes 80 training mini-games, covering everything from basic operations to specific weapon use and vehicle driving. These mini-games not only help players improve their skills but also offer extra fun as challenges, giving players plenty to explore after finishing the main story. Battle School is a first for the series in terms of progression-based gameplay, significantly expanding replayability.
Overall, Metal Slug 7 retains the core action experience of the series while showcasing the handheld's unique interactive potential through features like the touchscreen map and Battle School. Although the number of levels is reduced compared to previous entries, each level is meticulously designed in length and density, and with three difficulty settings, the game ensures lasting appeal. For series fans, the controls and combat rhythm still deliver the familiar thrill.
Background and release
Metal Slug 7 was released in Japan on July 22, 2008, published by SNK Playmore, and in North America on November 28 of the same year by Ignition Entertainment. As the seventh mainline entry, it is the first without an arcade version, marking a strategic shift from arcades to home consoles. This change drew significant attention at the time, as every previous installment had started in arcades before being ported to other platforms.
The story is set several years after the events of Metal Slug 4, Metal Slug 5, Metal Slug 3D, and Metal Slug Advance. The Peregrine Falcon Strike Force, SPARROWS, and the Rebel Army (the protagonists) reunite to pursue the resurgent General Morden. Morden's base is located on a massive garbage landfill island converted into a military fortress, where he plots his latest coup. Players control classic characters to infiltrate and thwart Morden's scheme.
As the plot progresses, after Morden's new weapon is destroyed, a time portal suddenly opens, and high-tech soldiers from the future emerge to support Morden. This introduces sci-fi elements into the series' usual military theme, making the story more intriguing. Players must face these well-equipped future soldiers and ultimately destroy the time portal to prevent Morden from altering history.
In the ending, the heroes successfully destroy the time portal, but Morden engages in a final battle atop a giant mech, the Kraken, over a lava lake. After a tough fight, Morden is defeated and captured. However, during transport, Morden is attacked by Martians on a helicopter and escapes. The final scene shows the heroes chasing Morden and his men into the sunset, leaving a cliffhanger for future stories.
The story serves as a bridge in the series, continuing Morden's role as the classic antagonist while expanding the world through time travel. While the sci-fi twist surprised some old fans, it also injected new energy into the franchise. As the last mainline entry, the plot provides a temporary conclusion to the long-running Morden conflict.
Development
Metal Slug 7 was developed by SNK Playmore, marking the first time the series created a mainline game specifically for a handheld platform. The choice of the Nintendo DS as an exclusive platform was driven by the declining arcade market and the DS's large user base and unique dual-screen hardware. The developers aimed to utilize the DS's touchscreen and dual screens to bring new gameplay possibilities to the series, rather than a simple port.
The game's music was composed by Toshikazu Tanaka, who had previously scored Metal Slug 4, Metal Slug 5, and Metal Slug 3D, giving him a deep understanding of the series' style. The soundtrack retains the series' signature fast-paced military themes while incorporating new arrangements to match the sci-fi plot and handheld atmosphere. Tanaka's involvement ensured musical consistency with previous entries.
The official 30th anniversary website described the game as 'a new front for the series on the Nintendo DS after seven mainline titles,' emphasizing its role as a fresh start. The official site also mentioned that the main mission mode includes new enemies, innovative Slugs, and various gimmicks across seven action levels. These promotional statements indicate the developers' intention to make this a representative title for the series in the handheld era, not just a transitional work.
During development, the main challenge was presenting the series' detailed pixel art and smooth action on the DS's limited hardware. Despite the DS's lower screen resolution compared to arcades, the team optimized pixel art and animation frames to preserve the visual style as much as possible. Implementing the touchscreen map also required extensive interface design to ensure it didn't hinder gameplay flow.
The decision to skip an arcade version was SNK Playmore's response to market trends. As arcade businesses declined globally, home consoles and handhelds became the primary gaming platforms. This shift not only affected development direction but also changed how players experienced the game. Although controversial at the time, it later proved foundational for the series' continued presence on handhelds.
Reception and legacy
Metal Slug 7 received 'mixed or average' reviews upon release, according to Metacritic, with media scores in the midrange. Japanese magazine Famitsu gave it scores of 7, 7, 8, and 6, totaling 28 out of 40. This score reflects the balance between innovation and tradition; some reviewers praised the touchscreen map and Battle School, while others criticized the level count and difficulty curve.
This game is the final mainline entry in the series, after which the franchise shifted to spin-offs like Metal Slug XX. As the concluding mainline title, it holds a special place in players' hearts. Despite not being top-tier in reviews, many veterans believe it successfully recreated the core experience on a handheld, with the touchscreen map considered one of the series' best innovations on portable platforms.
In 2009, SNK Playmore released a revised version, Metal Slug XX, for the PSP, published in North America by Atlus USA. This version added cooperative multiplayer and downloadable content, and was later ported to Xbox 360, PlayStation 4, and Windows. It's important to note that Metal Slug XX is a separate title; its new content is not part of the original Metal Slug 7, and reviews for the two should be considered separately.
The PSP version of Metal Slug XX received a score of 29 from Famitsu, slightly higher than the original, largely due to the addition of co-op mode. However, as the first mainline game without an arcade release, its platform strategy shift had a lasting impact on the series' future. It proved that Metal Slug could thrive outside arcades and provided a reference for later ports and remakes across multiple platforms.
Looking back, Metal Slug 7 may not be the most acclaimed entry, but its attempts and innovations on handhelds are commendable. The touchscreen map and Battle School added new gameplay dimensions, while the time-travel plot expanded the world. For series fans, it marks the end of the main storyline and the close of an era, with historical significance beyond mere scores.
