Is there possibility to host multiple applications with Google App Engine?

Question

Do I need to create for each new Google App Engine app new project? Or is there other way to have multiple apps in one project?

EDIT: removed \"extra question\"

Answer 1

Now getting back to this later I see that the proper approach is to use App Engine Services (previously known as Modules). Services can each have their own versions etc.

EDIT: Updated depricated name Modules to Services