I think fall out 3 was better than the other 2.. the feel of being in a wasteland was much better. What did you miss?
If you pushed your Sneak/Herbalism/Alchemy high and not the rest (combas skills) you didn't play Oblivion very normally. It's even good I think.. if you RP to be a non combattant then you are not a combattant.. and you should remain in the city and fade into obscurity

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