Fully titled Ketsui: Kizuna Jigoku Tachi (“Determination: Cutting the Bonds of Hell”), Ketsui is a bullet hell shoot-em-up released by Cave during the genre's early-2000s renaissance, and remains a favorite for its punishing difficulty and unique scoring system. Though less well-known than popular Cave shooters such as Dodonpachi and Deathsmiles, Ketsui features the same type of frenetic action you expect from a Cave game, but destroyed enemies here drop chips that increase in value depending on your distance from the enemy and connect into chains if you can maintain your pace. The mechanic creates a scoring multiplier metagame that raises the intensity, while Ketsui is simultaneously less unforgiving in some areas than similar Cave games.