Looking at the box art you would think centipede would be on vol. 1 and missile command on vol. 2, but no, missile command is on 1 and centipede on 2 according to the description. I wonder if amazon messed up.
I remember back when this first came out if you showed that you bought the season pass digitally you could get the option to buy the cards. I think I payed around $10 for them. May as well buy these if you want them. You can probably eBay the code and get a little bit back.