The heads of Two Point Studios mentioned the achievement of the hospital simulator in an interview with GamesIndustry.biz . They stated that they initially expected to sell only 650 thousand copies of Two Point Hospital, but thanks to the release of the Game Pass, they were able to interest significantly more people.
The developers also noted that Two Point Hospital has a high level of MAU. So much so that Xbox asks not to remove the game from the subscription. They did not specify the specific number of monthly active users.
Two Point Hospital was released in 2018 on PC. Two years later, she had a console version.