Posted June 22, 2015
You mean Fallout 3? You can probably make it run on Windows 8.1 with a little work, as I managed to do, too, following this guide. I guess you can skip step 2 by now, in any case, don't use the "Move savgegames" button! So it's mostly a matter of installing Games for Windows Live (although the game doesn't need it) and applying the unofficial patch. I still have to press Alt-Enter each time I start the game to get rid of the window borders in Fullscreen mode, but otherwise it works fine for me on Win 8.1. I think New Vegas worked right out of the box, and Fallout 1 & 2 treated by GOG, too (not sure what versions Steam is offering).
Post edited June 22, 2015 by Leroux