The Star Wars Pinball app purchase comes with The Empire Strikes Back table. When downloading the game you will be asked if you want to download this table, if you selected no the first time, no problem!
You will be able to get it by:

- Starting the game and navigating to the main menu
- You should be able to see an icon in the bottom row with an AT-AT Imperial Walker on it, please tap that

- The download should start and you should be able to start playing!
- Have fun!