Calling all gamers

[cannongal]

Does it cost more money for add-ons to the game?

In the tablet world, What they are talking about is called an "in-app" purchase. Some in-app purchases allow you to unlock levels you can't get otherwise. Other in-app purchases are like booster packs, they allow you to complete goals faster.

It's kinda like the Shareware games you could get when computers first came out. They gave you the basic game, but if you wanted to unlock more levels, or get better characters, you had to send additional money to the programmer for a special code to unlock the rest of the disk.