C: The Money of Soul and Possibility Control, Devil Survivor 2 The Animation Recommendations
*C: The Money of soul and possibility control uses Money (Midas money) and Assets to save the world
*Devil Survivor 2 uses demons to save the world
Boy protagonists meets a guy trying to change and save the world even if it means to sacrifice.
Both series are survival
Well, to begin with, both anime feature a male main character. Their lives are both flipped completely once they become involved in a game. Along with this, the anime revolve around the theme of survival. Because of this, there are a good amount of battle scenes which feature a variety of demons.