The screensaver works perfectly well!Your problem is that standard version of Mame will pass the nag screen only if you've skipped it at first. This is why you can "see" some games (the one you've already played..and some not!The solution is to find a special Mame build that will skip the nag screen..or build that kind of version by yourself!Here is a link to a 64bit versionhttp://uploaded.net/file/3p10btlo/Mame___MameUI_0.158_64_bits_nonag-dinput-hiscore_(insertmorecoins.wordpress.com).7za link to a 32bit versionhttp://uploaded.net/file/va5ajqzs/Mame___MameUI_0.158_32_bits_nonag-dinput-hiscore_(insertmorecoins.wordpress.com).7za page with links to various no nag mame versionshttp://www.arcadepunks.com/download-mame-collections/Info on how to do it by yourselfhttp://mrdo.mameworld.info/compile.php