Lo tendremos para siempre si lo añadimos durante las primeras 100 horas (el juego ha salido hoy).
Why does the game cost money for the people who download it after the first 100 hours?
The first 100 hours after the release will be free for all and that means free forever, if you get the game before the first 100 hours end you will NOT have to pay to keep it. The 4.99$ price after the first 100 hours goes to preserving the game such as server costs etc.