 When Ryu's spiritual strength meter is too low, the player cannot use secondary weapons.Players can replenish Ryu's spiritual strength by collecting red and blue "spiritual strength" items found in lamps and lanterns.Other items found along the way include hourglasses that freeze all enemies and projectiles for five seconds, bonus point containers, potions that restore six units of physical strength, "invincible fire wheels" that make Ryu temporarily invincible to attacks and 1-ups.