Spoiler for VN Differences:
Awww... They dumbed down
this part of the story. They didn't show psycho Nae who time leaped all the way from the future for revenge! I don't see why they did that when they kept the part where she pushes Mayuri off the platform.
Then again, why
did she have to time leap back for revenge in the game when she already managed to capture and torture Okabe in the future already...? Ah well.
...And it's dilemma time. Come on Okabe, you know you want Kurisu more than Mayuri =P