As advanced features were integrated into joystick-use devices such as video game consoles or portable devices, text entry become an important function. There were some researches about English joystick text entry techniques but, because of the late introduction of the latest joystick-based devices for example PlayStation 3, Korean joystick text entry methods had not been researched except ASK-HIM which was our former research. We introduced Korean EdgeWrite, a Korean text entry method for a joystick. To achieve efficiency and easiness, the initial gesture was designed with the analysis of Hangeul; the initial design was modified by a pilot test. The Korean EdgeWrite gesture design was enhanced again after applying participants`` gesture design from the guessability test. Keystrokes per character for the Korean EdgeWrite could be comparable with that of multi-tap. Immediate usability test showed the Korean EdgeWrite was similarly easy to remember for novice compared to the EdgeWrite or Graffiti. In a user study, most of the participants could learn the Korean EdgeWrite gestures within no longer than 10 minutes. They could enter the text faster using the Korean EdgeWrite than using an alphabetic selection keyboard or a multi-tap selection keypad. Also, the performance shown by a group of well trained users could be comparable with that of a mobile phone keypad. In a post-test survey, the participants gave a higher rating to the Korean EdgeWrite than to the selection-based text entry methods in terms of the preference and the speed. The Korean EdgeWrite outperformed ASK-HIM, another non-selection-based joystick text entry method in Korean, too.