This has some amazing potential to be one of the best free apps ever. Honestly, this is a great simulator. I am using this on a Mac mini 2011 with Radeon graphics. It is slightly below the requirements, but it does not feel like it at all. The graphics are amazing in this game. The controls make for a good sim, with a bunch of functions for the fights. Yes there are some moments where it feels like a lag spike, but the overall game itself is quite worthy of a 4-star review. There is some degree of bad news, though. I couldn’t get a game controller to work with the game at all. This made for a keyboard experience and, quite frankly, keyboard controls are clunky. It could be that I used the wrong controller, but the website makes it seem like Playstation or XBox controllers are supported. I have a PS controller and for the life of me, I could not make it work. So it has great potential, but needs controller support.