The Phillips Foundation is sponsoring a grapple tournament, and the prize is ten million dollars. Eight warriors have gathered to take part in the tournament -- some for the money, some for the fame, and some for more personal reasons. The name of the tournament is...POWER OF SOLID.
Shadow Struggle is a fast-paced 3D fighting game similar to its contemporary Toshinden. There are eight playable characters each with their own moves. During the fights, in addition to their health meter, each character has a "Shadow Skill Gauge" that fills up as blows are exchanged. When it fills up and starts flashing, they can unleash their "Shadow Skill", allowing them a short burst of increased attack speed and power.
The game features standard Arcade and Versus modes, as well as a mode called Arena game in which you fight to win credits, which can be used to buy new moves and customize your character. Saved characters can be used against each other in two-player bouts.