No Automatic Goal
Not having an automatic goal will not prevent you from creating a game but it could be a pain to manage.
Goals are objectives to completing a level. Having automatic goals allows you to not have to mark sprites individually.
First select the sprite that you want to use an automatic goal by Right-Clicking on it and select Edit Sprite from the Pop-up Menu.
Select the Feature tab.
Click Automatic Goal from under Special Flags.
Save your change. Every new Sprite of this type inserted onto your level will be a goal by default.
Existing Sprite before the change will not similarly marked as this change is not retroactive.