This sequel expanded the roster by adding Eri Kasamoto and Fiolina "Fio" Germi. It introduced supernatural elements like mummies and aliens, alongside new transformations like getting fat or turning into a mummy. Metal Slug X (1999)
By Metal Slug 3 , the Martians go a step further, cloning Morden and replacing high-ranking officers. This forces a desperate, temporary alliance between the Regular Army and the remaining Rebel forces to launch a rescue mission directly into deep space. The Modern Threats (Metal Slug 4, 5, 6, 7) Metal Slug Collection 1-2-3-4-5-6-7-X PC Comple...
also sells DRM-free versions of several Metal Slug titles, including Metal Slug , Metal Slug X , Metal Slug 3 , and Metal Slug 4 . The advantage of GOG is permanent ownership — no online checks or restrictive DRM — and excellent support for modern operating systems. GOG versions often include additional features like higher resolution support, customizable aspect ratios, and better controller compatibility compared to older physical releases. This sequel expanded the roster by adding Eri
Marked the move to the Atomiswave hardware, adding a weapon-stocking system and characters from King of Fighters. This forces a desperate, temporary alliance between the
The series quickly became a staple of the run-and-gun genre, alongside classics like Contra and Gunstar Heroes . But Metal Slug stood apart with its unmistakable sense of humor: prisoners waving for help and offering power-ups, bizarre alien invasions, and the iconic titular Metal Slug tank — a weaponized vehicle that felt as satisfying to pilot as it looked.
The series stands as the undisputed king of the run-and-gun genre. Originally tearing up Neo Geo arcade cabinets in the 1990s, this legendary franchise combines chaotic action, beautiful hand-drawn pixel art, and brutal difficulty. For PC players, getting the complete anthology—spanning Metal Slug 1, 2, 3, 4, 5, 6, 7, and X —is the ultimate way to experience decades of military side-scrolling mayhem.