NVIDIA officially abandoned 3D Vision support after driver version 425.31. Geo-11 was created to:

For years, the HelixMod community relied on a tool called "3Dmigoto" to fix broken shaders in 3D games. GEO 11 is essentially the next generation of this technology, designed to handle the complexities of modern rendering—like shadows, light shafts, and reflections—that typically "break" when forced into a 3D perspective [2]. Why GEO 11 Matters Today

GEO 11 is a specialized . It acts as a bridge, allowing games built on the DX11 API to communicate with 3D-capable hardware even without official NVIDIA driver support.