Question

i have a question.
If i was to distribute my games via the internet for a fee, how could i prevent piracy?

The tried and true way to prevent piracy is having your users register an account on your site. Then, when a user runs your game, ask them for their username and password; your game can talk to your site and authenticate the user. When the user is authenticated, you can unlock the game.

If you keep track of when a user unlocks their game, you can get as creative as you want. For example, your game can check to see if its already been unlocked for a particular account; if it has, then it refuses to unlock itself. This prevents people from reusing the same username/password to unlock multiple copies of the game.

Basically, if you're smart enough to write a game, preventing piracy should be easy

hmmm, what about a code that is emailed to them after they purchase it, so once they use it it cant be reused.