[UPDATE] From The Developer! He sent me this :
From : soundspark
Good news! I'm starting to make some progress on this issue. More stuff is starting to render as of SVN revision 582.
At this point, I seem to have successfully reversed the Divide by W and the viewport transformation. It seems the game needs more features implemented too though as things like the mouse cursor are lacking in color keying, for instance.
Also, as an added bonus, the game window now minimizes when you press Alt+Tab, and automatically restores the resolution of your desktop. Had to add a few API hooks to pull that one off though.