For @mtf2008 intro. For the rules (6-12 secondes) it stops when you click so it can be 10 secondes or 20 minutes, but of course, you can change that...
I used the same technique than for my own intro : https://scratch.mit.edu/projects/542467067 Message to mtf2008: "Of course you can change the colours..." & "Hope you like it"
