Chaos is the latest iteration in the Onechanbara series featuring the world's sexiest zombie slayers. With two sets of buxom vampire sisters at the player's disposal, over a dozen stages of high-octane real-time swordplay await, each characterized by the hordes of zombies infesting the land and the over-the-top methods our heroes employ to kill them. Fight off the invasion in gruesome detail, sending limbs and blood flying every which way through a variety of physical attacks and acrobatic maneuvers, occasionally transforming into a demon for short bursts of added power and speed at the cost of life energy. Each of the four members of the so-called "bikini zombie squad" has her own unique abilities, and skillful play is rewarded with orbs that can be exchanged for upgraded weapons and outfits.