Changing your settings using 'sudo raspi-config --> Advanced options --> Boot to desktop', and select boot straight to desktop. Now, when you go 'Start --> Logout', it should give you the option to shutdown. It should now shutdown more successfully.
I'm happy to help.
https://www.raspberrypi.org/forums/viewtopic.php?f=78&t=51794 - List of games that work on the Pi.