Kore projects are built using koremake, a nodejs tool.
In your project's directory call
node Kore/make - this will
create a project file for your IDE in a build subdirectory.
koremake by default creates a project for the system you are currently using,
but you can also put one of windows, linux, android, windowsapp, osx and ios
in the arguments list to create something else. In Windows you can also
choose your graphics api (-g direct3d9/direct3d11/direct3d12/opengl/vulkan/metal)
and your Visual Studio version (-v vs2010/vs2012/vs2013/vs2015/vs2017).