ELEX: New Sci-Fi-RPG by Piranha Bytes

[i3670]

That sounds like a rather stuck-up answer X3

Exactly because it seems it's built up in exactly the same way:
Role-playing - check
post-apocalyptic setting - check (probably nucular because of mutations)
huge seamless world - check (with the exception of interiors)
"original" characters, muties, moral choices, action - check, check and check