glu coins

I am a Kindle player and I have a couple of questions. 1) My device has a picture of a package and when I click on it is for free glu coins. Does not say for how many but does ask for a code. Where do you get the code?? 2) I have run out of energy drinks, hollow bullets and extra lamps and no place to purchase some if I want to continue with out using glucoins which I only have about ten and they want like 20 to purchase just a drink! Is this just a Kindle thing??? please....input


fish