https://www.gamespot.com/articles/state-of-decay-2-attracted-over-1-million-players-/1100-6459234/

When you're taking on horde, after horde, after horde of zombies, sometimes numbers are your only way to survive. In just two days after its global launch on Xbox One and PC, State of Decay 2 racked up over one million players.

It should be noted that the number of players doesn't necessarily account for the number of sales. State of Decay 2 is currently available on Xbox Games Pass, Xbox One's game streaming service. Members of the service can play the game in its entirety without having to have purchased it.