If you have to choose one of those, go with Dragon Age: Origins. If you can afford it, get all of them. I personally think Oblivion is complete crap, and requires a shit-ton of modding to even be okay, but a lot of people call it one of the best RPGs ever, I'm probably a minority there.
Either way, Dragon Age 2 isn't as bad as some people say, if you ask me. I think it's great, but Origins is still easily the best game out of the three.
Either way, Dragon Age 2 isn't as bad as some people say, if you ask me. I think it's great, but Origins is still easily the best game out of the three.