
GM_Rave works surprisingly well in SFM, the buttons and such work, although i think it breaks tonemap lighting, AO, DOF and possibly non-work camera cameras
It is actually missing a few textures and the bathroom walls and floors are nothing but white wireframe and there are some missing models
If you want to use any of the buttons in GM_Rave, you have to go into game view and bind a key to the +use command