Scream Machines is a roller coaster simulator application. It provides a feature to create your own tracks and then go for the ride. Just after downloading it have 20 different tracks and 39 trains. But you can create tracks according to your taste like you can add hills, lakes etc with the help of Terrain editor. It also provides a ride option, you have total control over your ride and you can also transfer to another track. And the most unique thing is that your creations are not just for you, you can upload those creations on a fan-created website. Then what are you waiting for, download and play the game. It’s not free to download but offers a free trail pack.