The King of Fighters '97 arrived in arcades in 1997 as the fourth mainline entry in SNK's flagship team-based fighting franchise, following The King of Fighters '94, '95, and '96. By this point, the Neo Geo MVS hardware was well into its prime years, and SNK had refined the series formula to a sharp edge. KOF '97 serves as the concluding chapter of the "Orochi Saga," the multi-year storyline that had been building since '94, giving the game a sense of narrative finality that resonated strongly with dedicated fans of the series. The plot centers on the return of the ancient evil Orochi and the conflict involving the three sacred clans — the Kusanagi, the Yagami, and the Yata — culminating in a dramatic final confrontation.
Gameplay in KOF '97 retains the series' core three-on-three team battle structure, where players select a team of three fighters and compete in sequential one-on-one bouts, carrying damage between rounds. The control scheme uses four buttons — Light Punch, Heavy Punch, Light Kick, and Heavy Kick — mapped to SNK's standard Neo Geo layout. What distinguishes KOF '97 from its predecessors is the introduction of a dual-mode power gauge system. Players can choose between the "Extra" mode, carried over from KOF '94 and '95, which allows the gauge to charge manually and enables evasive rolls and guard cancels, and the "Advanced" mode introduced in KOF '96, which fills the gauge through offensive and defensive actions and allows players to stock multiple super moves. This choice adds a meaningful layer of strategic identity to each match, as the two modes play quite differently and reward different playstyles.
The roster expanded to include a broad cast of returning favorites alongside new additions, and the game introduced Orochi versions of several characters — such as Orochi Iori and Orochi Leona — as hidden or mid-boss fighters, each with altered move sets that felt distinct from their standard counterparts. The boss gauntlet leading to the final encounter with Orochi himself is notably demanding, requiring players to defeat a sequence of powerful opponents before reaching the climax.
In its arcade era, KOF '97 was a fixture in Asian arcades particularly, drawing enormous crowds in Japan, Hong Kong, South Korea, and across Southeast Asia. The game's blend of accessible team mechanics, deep combo systems, and the emotional payoff of the Orochi storyline's conclusion made it a landmark moment for the franchise. SNK supported the game with a home port for the Neo Geo AES console, and it later appeared on the Neo Geo CD. The competitive scene around the game was vibrant, with players dissecting frame data and optimal team compositions in an era before widespread internet resources made such information easily accessible. KOF '97 is frequently cited alongside Street Fighter III: 3rd Strike and Tekken 3 as one of the defining fighting games of the late 1990s arcade era.