Crisis Core: Final Fantasy VII is set six years before the 1997 PSX game Final Fantasy VII , following the adventures of Zack Fair as he discovers the truth of the organisation he works for, Shin-Ra. At the time, Cloud Strife is still a Shinra Guard and Aerith Gainsborough also makes an appearance. Other prominent figures are Sephiroth, Tifa, Yuffie, Cait Sith, members of the Turks gang and also characters from Dirge of Cerberus .
The game is played as an action RPG with a turn-based battle system called DMV or Digital Mind Wave. The events are mainly set around the city of Nibelheim. In this system, character portraits spin in the top left corner of the screen. Lining up the same character in all reels earns a power-up, known as Power Surge. Attacks can be both physical and spell-based, with materia also returning from the previous game. Different varieties of materia exist, including defensive and offensive types that can be fused together.