Crysis
- it is fps
- it is open world (but don't think u can roam until reach bukit bintang la), open world but with an objective
- many ways to achieve your objective
- you can play again and again experimenting with different approaches

now, this is different from COD. fallout 3 is kind of RPG, but does it have the above elements (not sure)? not sure about drago n rising. i google it first.
update: Ok, googled it already. Yeah that fits what i looking for too. Thanks phoenixbyte

I know this is out of topic, but if i want to play ps3 without using the stupid analog sticks, what other options do i have? is there a point and shoot add-on or something similiar i can play fps. I really really find it impossible to play fps on analog sticks, that is why i am asking.