JustEmpire and TEmpire (Tiny Empire) are two Empire-derivative games based (very!) loosely on Walter Bright's original Empire concept (classicempire.com), using JustBasic (justbasic.com) and Borland Turbo C/C++ (bdn.borland.com/museum). Others possible.
This little tool reads various GO-formats (starting with SGF-parser) and will write a POV (Persistance of Vision) - file. The file can be rendered using POV, so the resulting image will be a high-res raytraced go-board.