Sengoku (戦国伝承, Sengoku Denshō) is a side scrolling beat-'em-up game produced by SNK. It is the first game of the Sengoku series and was released in arcades on February 12, 1991. The game was ported to the Neo Geo, Mega CD, and SNES consoles. This title was also included in the compilation piece: SNK Arcade Classics Vol. 1.

A player has a maximum of six health points. When certain enemies are defeated, spirits of powerful forms are available to transform into. In the SNES version transformation cannot be toggled, but stays constant for a limited time. The three different forms are a samurai, an armour-clad wolf and a more agile ninja. These forms have a limited use. Their attacks and jumps differ from the original form and their powers are enhanced by any power-ups collected.

Throughout the game the player would need to survive the hordes of enemies by collecting coloured orbs as power-ups. Five Green orbs heal one health point. A Red orb gives the player a single sword, a Cyan orb gives the player a double sword, the Purple orb gives the player a two-handed holy sword and a Yellow orb gives the player a limited magical attack.