This game is using an activation system and has an installation limit.
Q: What kind of activation system?
When you start the game after finishing the download and the installation for the first time, you will see a screen which tells you to write down your purchasing email. Write it down and press OK to start activation. You need to be connected to the internet during this process.
The game will start a moment after the activation has finished.
You won't see the activation screen anymore even if you restart the game, and you can play it without being connected to the internet.
Reactivation won't be needed if there is no special case.
Q: How do you limit the installation?
One email address can be used to activate the game on a maximum of 3 computers. The activated computer's id will be registered in our database.
You can install the same game 10 times on the same computer.
If you want to install the game on a fourth computer, you will need to have the formerly registered computer removed from our database.