Putting a game on the menu thing

I have no clue were to post this, so admins do what you want with this post.

Problem: I know how to get simple games like miniRA and age of empires and that kinda stuff, but how do i put it on the apps thing so that there is a pretty little picture. I want to open the menu thingy and be able to click on age of empires under textpad. Is there any way to put it in the apps menu section????