The free, open-source multi-platform game engine Sphere, on GitHub!
To build Sphere visit the wiki:
You will need the third party msvc which can be found here:
Mirror 1: http://rpgmaker.net/media/content/users/6429/locker/thirdpartymsvc.zip
Mirror 2: http://www.radnen.tengudev.com/thirdpartymsvc.zip
Note: MSVC 2010 and up has been proven to work when building Sphere.
Dependencies: