I m the one who added it maybe I didn explain it very well It s not just a change of graphic options as in a simple video resolution change The game contains two compressed files each of which contains distinct textures and models which are the low res assets and the high res assets IMHO the notable part is how only the pixel shader 3 0 compatible video card can use the high resolution textures and more detailed model conversely the less performing video cards can not use the high res assets it s impossible and the high res assets file can even be deleted without any repercussion on the game