https://blog.faceutil.com/2017/03/26/gameboost-v1-3-16-2009-%ea%b2%8c%ec%9e%84%ec%84%b1%eb%8a%a5-%ed%96%a5%ec%83%81%ea%b3%bc-%ec%9d%b8%ed%84%b0%eb%84%b7-%ec%86%8d%eb%8f%84%ed%96%a5%ec%83%81-%e3%83%88/