Fallout 3
Clocked about 30 hours into the game and still have so much more to do.
I already have a few gripes with the game that are frustrating. I know that enemies don't get strong as you scale up like in Oblivion, but for some reason, as I level up, only my damage is increasing, but not my endurance. So I go somewhere, and got shot at from God knows where by Raiders, and I see my health bar going down. Not cool. Is there some super damage resistant Armor I can find somewhere? And is there a stat that actually controls how much damage you take?
Another issue I have is with the glitches in the game, especially when it comes to the NPC AI. I have had to reload several times because they did what they were supposed to do before I even entered the room.
But overall, I can say it is a very enjoyable Oblivion with guns kind of game.