I am creating a demo to show off specific functions. The demo should start with an initial "level" that provides the end-user with three buttons. Each button will load a different level or demo for the end-user to view/play.

What is the best way to go about doing this?

Should each "demo" be its own "game?"

Some pointers, at least, would be much appreciated.

Thanks!

For now I am using a completely different application to launch each demo. Each demo is published as an EXE file. I know this wouldn't work for a game, but it works fine for my demo ... for now.

You first make these three levels(you already have them)

then you make a panel that has 3 buttons (see the manual)
these 3 buttons are call level loading functions like these:


I am a little too lazy to look it all up,
but I hope these directions are useful!