Oblivion. TES4 (The Elder Scrolls 4).
Apart from being a pretty and fun game, the character generation portion may be of some interest to some in that you can customize the character's face via many parameters. Playing with this may help to put your finger on just what facial features you like.
However, it is next to impossible to get the same face again (*sigh* they dropped the ball there, but never mind that) so making a likeness of yourself and tweaking to a feminine (or masculine) appearance may nor be worth the effort, but it is a possibility, even if remote.