Xcode project not showing list of simulators

Question

I open my project in Xcode 6.1. When I try to run the project, the button is grayed out. When I try to go to Product > Clean, the option is grayed out. When

Answer 1

For those coming from Unity, even if you manage to make them show up (by changing Build Settings > Supported Platforms to iOS it would not run in the simulator.

Instead, you need to select this Simulator SDK :

And make sure something other than Metal exist.

Then the simulator device list will be there from start.