ahh ok :) I was expecting them to show up on the main screen :D
are you ever going to add multiplayer/network ability? :D
I agree it may not be very intuitive, have added some info in the custom levels download instructions (and in the user manual) so that it will hopefully be more clear.
It's one of the things I would like to add most of all, however it comes with it's own set of challenges to do well and for now I have put multiplayer on hold.