Can't play the game, even on LAN without authenticating via the GOG Galaxy Client. It is a huge scam, avoid if possible.
If you are a big fan of the Fallout series you must try New Vegas too. I think this is the worst game of the series, but still worth a shot. It has a lot of improvements compared to Fallout 3, like textures, highly moddable weapons, an improved companion menu, etc. The story is very flat, predictable, and sometimes boring, but Bethesda spiced it up with a good sense of humor. It took me 21 hours (including the time I spent on the menu) to finish.
