Knights of Valour Plus is a 1999 arcade beat-'em-up developed by IGS (International Games System), a Taiwanese developer that carved out a distinctive niche in the late 1990s coin-op market with hardware based on their PGM (Poly Game Master) system board. Released as an enhanced version of the original Knights of Valour (also 1999), the "Plus" edition arrived during a period when the arcade industry was navigating fierce competition from increasingly powerful home consoles. The PGM board gave IGS a platform capable of delivering large, colorful sprites and smooth animation at a time when many rivals were either migrating to 3D polygon hardware or exiting the market entirely. Knights of Valour Plus distinguished itself by drawing its setting and characters from the classic Chinese historical novel "Romance of the Three Kingdoms," giving it a strong cultural identity that resonated deeply with audiences across East and Southeast Asia.
Gameplay follows the conventions of the side-scrolling beat-'em-up genre established by titles like Final Fight and Golden Axe, but layers on role-playing elements that were uncommon for the format at the time. Up to four players can participate simultaneously, each selecting from a roster of warriors drawn from the Three Kingdoms period — figures such as Guan Yu, Zhang Fei, Zhao Yun, and Lu Bu, each with distinct move sets, weapon types, and stat profiles. Characters accumulate experience points as they defeat enemies, leveling up mid-session to increase their attack power, defense, and special ability potency. This progression system gave the game a sense of momentum and investment that pure brawlers of the era lacked.
Controls are built around a standard arcade layout: a joystick paired with attack and jump buttons, with special moves executed through directional inputs combined with button presses. Each character possesses a powered-up state triggered by filling a "Musou" or chi gauge, unleashing screen-clearing attacks that are both visually spectacular and tactically essential against the game's tougher boss encounters. Levels scroll horizontally through environments inspired by ancient China — battlefields, fortresses, and palace corridors — populated by waves of foot soldiers and punctuated by large, imposing boss characters who demand pattern recognition and careful resource management.
The "Plus" designation over the base Knights of Valour release brought additional playable characters, balance adjustments, and expanded content, making it the definitive arcade version for operators and players alike. In its era, the game found a strong foothold in Asian arcades, where the Romance of the Three Kingdoms source material was immediately legible and beloved. The four-player cabinet configuration encouraged group play and repeat visits, sustaining location revenue in the way that only cooperative experiences could. Western exposure was more limited, as IGS lacked the distribution reach of Capcom or Konami in those markets, but import enthusiasts and collectors recognized the game's quality. Its combination of accessible brawler mechanics with RPG depth made it a standout on the PGM platform and a precursor to the more elaborate entries IGS would develop in subsequent years.
