you will be force to purchase if you would like to pass the level. they barely give coins everytime you finish the level but the upgrades are too expensive. even if you max out the patient patience, it is still the same. customers are coming to fast while the doctor heal the patient very slow. asking for a lot of equipment when there is only one nurse. this needs to be fixed. unless you only cater to those who can pay. i uninstalled the game already.