This app was mentioned in 2 comments, with an average of 2.50 upvotes
All of Medical Joyworks' apps are quite fun, but I'm an even bigger fan of Resuscitation because of the relative freedom you have to treat the patient.
I've used this app to simulate ER cases ... It's okay, I feel like some of the info might be outdated but definitely gets me in the right mindset. Resuscitation! https://play.google.com/store/apps/details?id=com.emgladiators.resuscitation