[viper sniper]

hi can someone please help me. im trying to find out how much the game size is of this game its been put on my hdd by the person who installed my chip +hdd. also it dosent come up on the list off games where you would normally install/deleat games its on list of games on hdd but when i say go to copy/deleat a game its not there so where did he put it??? and how can i get rid of it