Delete Virus; combines the pleasure elements of rhythm and action to give the player a thrill, defend against virus attacks, and separate phases with a vaccine attack, so that the player can truly enjoy the rhythm and play without the stress of hitting all the notes. ■ Utilization of existing computer viruses A stage with the motif of a real computer virus that was popular, and various virus character designs and rhythm disturbance elements ■ Two phases: virus attack & vaccine defense, and vaccine attack A vaccine defense phase that is defended by pressing the same command as a virus attack using the keys of 'w', 'a', 's', and 'd' and a vaccine attack phase that attempts to attack by pressing 'space bar' ■ Interesting story Shadow of darkness approached 'CAVV' and 'SURIV' who came to take the practical test. Will they be able to complete the test safely and fulfill their long-cherished desire?