The "always fires" switch on a Clock is for repeating events like a metronome.
You want to keep that off.
Use the other switch, that enables (starts and stops) it.
A Notifier is a good way to pop up a message.
Pick the type that comes with an Okay button,
and look for the Notifier block that picks up after the Okay is hit
to start the new game.
Use the PrtSc button to take screen shots of your blocks,
Windows Paint to clip and save them, and attach them as files to your
post for others to see.