Dream About Horrifying App Nightmare

This dream was about

My dream started in a 3rd person point of view of a girl downloading a new app on her phone. She was alone in her bedroom. When the app was down downloading she open it and took a picture of herself. She then look at the picture and some sort of demand was written on the picture. She tried to complete the task but couldn't. So she just laid down in bed and was about to scroll through Instagram but all if the sudden some thing started choking her. Ther wasn't anyone else in the room but her but you could see a large imprint of a hand around her throat. In the mist if her struggling the dream then switches to a different person but this time it's in 1st person, So Im assuming it was me, since I was looking at old photos of my self. It was me and 3 other friends at one of their homes. One of my friends were talking about the app (the one the girl downloaded) and took a photo. Like the girls photo, there was a task to so. So 1st friend did the task and nothing happen. 1st friend the suggested we did it. I choose not to but friend 2 and 3 took a selfie together. They then tried to do their task but ultimately failed. We looled at their selfie amd there was new writting. It said "you have failed, your time has come." We all laughed about it until the ceiling fan fell and kill friend 3. Friend 1 said it was a coincidence but friend 2 was horrified and took off running. Befor he could reach the front door he fell and hit his head on the corner of a shelf. He started to have a seizure.after the seizure ran its course he check his pulse but he had none. Friends one was then worried about his sister so he called her but she didn't answer. So we got in my car and took off. The dream then cut to us driving on the highway but there was destruction all around us. Cars were flipped and running into each other. Planes were falling from the sky and there were random body's in the streets. The dream then cuts to us at a party looking for his sister. While everyone is taking part of the apps death game. People were completing the task while some were failing and dieing in random ways. Some strangled, some their throat sliced open and ect. We finally found his sister but it was to late she had just failed her task. She then snapped her own neck. Then I suddenly work up to my alarm clock as her body was falling to the ground.