DarkxideX, you don't do trading card games often do you?
just like when you buy an actual pack in a store you have a chance to get a shiny card, some call them foil or holo cards. they are exactly the same except worth a few times more if you choose to sell them.
Same thing as all the above, when you get far the game freezes, the elevators glitch and no more money is added. It happened to me after building the turbo lift shaft, anyone else?