You can use their calculator on their homepage to compute how much you can earn testing or reviewing games. But according to a 2008 Game Developer Magazine survey, game testers earn an average of $39,063 annually. Testers with less than three years experience earn an average of $25,142 while testers with over six years experience earn $43,056. Testing leads with over six years of experience earn on an average of $70,658 a year.