It seems that I should be able to quit a game when I want but it won't let me. Even when I have won the game the registration message comes up. I have an older mac and have to re-boot all the time. PLEASE FIX this!

kerlyn2010,

  It is not this site. You need to update Safari, and make sure cookies are enabled, probable cause for registration screen popping-up.

I am now able to play another game when I want. Much better.