Originally Posted by
shinta|hikari
So it has been confirmed that Okabe has the ability to retain his memory even in different world lines. It is a strange ability, since it doesn't add to the new Okabe in the new timeline, but overwrites him. Doesn't this mean that he "kills" an Okabe each time he jumps lines? The Okabe that everyone else in that world knows is completely gone, after all.
I wonder if each time they change the past, a new parallel universe is created. If that is not the case, Okabe has destroyed and created several universes already for the sake of his experiments.