Which of these 3 game is more similar to The Elder Scrolls IV: Oblivion?

- Demon's Souls
- Dragon Age: Origins
- Risen

So which one of these is more similar to The Elder Scrolls IV: Oblivion?
Please don't say all 3 or a different game than those 3, as all I want to know is which one of these I listed only.
I can only get one and I need to know which is what I am looking for.

from looking at a few vids on DS, if i had a PS3 i would go with that. that looks like a really sweet game and awesome concepts plus it doesnt look/sound way too easy. as for if its like oblivion i wouldnt say so. looks like theres a set path as to what DA-O or..cant really say any thing about risen yet besides nice visuals.

DA:O looks like the closest bet.

Demon's soul, its really really hard but id say the most similar to Oblivion