Well, I want to warn users here to watch out if they are ordering the My Arcade games online. My mom just got me a Burger Time off of an Amazon seller store, but instead of Burger Time on the game, it has Karate Champ! It was factory sealed in the Burger Time package and it's all labeled as a Burger Time on the game itself. To say the least, she is NOT happy and I admit to being a bit disappointed myself. I'd send it back, but the hassle of sending an already opened item back to Amazon just isn't worth it for an item that even the seller didn't know was faulty.
It's no hassle at all... go into your purchase history, initiate a return/exchange, tell them what happened and they'll send you a return shipping label you slap on the box to drop off in the mail. You'll get your replacement in no time.
Or maybe you could open the machine up, and rectify the solder pads to play the correct game. Assuming these are like the other machines where more games are included, but solder pads determine what comes up.