I could hear the music but all I got was a black screen. And I ran the game directly from the windows .zip file (once I extracted it).
Sounds like an OpenGL issue. Do you know what graphic card model you have? Are your drivers up to date?
I have Opengl 2.0.
That would explain it. The Lightkeeper requires OpenGL 4.0 or newer. I believe most graphic cards nowadays can handle it (including Intel-based laptops, provided they're not too old), so upgrading your GPU drivers may help.
