So I'm doing a small little project and I need help. It's an App Store.
So you start off with 5 'money'. (I'll change it to a different name later :P )
Every game you install takes away one money. If you run out of money you won't be able to download the game. But how do you make it so the player can't install the same game more than one time? Please help.
(P.S So far there's only one game.)
Here's the link: