Zhè kuǎn yóuxì de kāifāzhě shì yígè dúlì gōngzuòshì.
The developer of this game is an indie studio.
Tips
usage
开发者 and 开发人员 both mean 'developer'. 开发者 is shorter and common in casual tech writing; 开发人员 is slightly more formal/HR-flavored. In job titles, 程序员 ('programmer') is also common.