Can someone explain me, what the Prestige button is doing? (PC) I pressed it once and the game restarted with all my progress gone. :/
It's a common incremental game mechanic, prestige means you restart the game with a currency that you can use for permanent upgrades. So even though you start from the beginning, the bonuses means you'll progress faster and go farther in the game. Which allow you to prestige for even more currency and so on.