https://www.gamespot.com/articles/state-of-decay-2-was-the-best-selling-game-of-may-/1100-6459973/

Microsoft's zombie survival game, State of Decay 2, was the best-selling title of May in the US, the NPD Group has announced. The game launched for Xbox One and PC toward the end of the month and managed to take the number one spot on the software sales chart, edging out other big May releases like the PS4-exclusive Detroit: Become Human. Its strong debut is also impressive considering that the game is available for free for those who have an Xbox Game Pass subscription.

Despite suffering from technical and performance issues, State of Decay 2 has proven to be quite popular among fans. The game attracted more than 2 million players within its first two weeks of availability. Microsoft appears to be quite pleased with the title; during its E3 2018 press conference, the company announced that it acquired State of Decay developer Undead Labs, along with four other studios.