How come my games never save? I enabled cookies and all that good stuff. But when I come back to play it later, only the "New Game" options is available
You know how hard it was to beat Kingdom Rush STRAIGHT!? JESUS!
Does anyone else have access to your computer and do they/you clear cookies/history/etc? Do you have it set to clear those things every time you close the browser?
It might sounds silly, but I had the same thing a few years ago when I played a game that was mysteriously reset the next day. It turned out I had forgotten about my brwoser's settings which cleared everything the next day, including... my game progress save files. Could this be your problem as well? =)