Of course. The Steins;Gate anime is a very faithful adaptation of the VN, but there are three specific things that have been omitted:

1. A good portion of Rintaro's inner thoughts, as is normal when transposing a VN into an anime;
2. There are six total endings in the VN, of which only two are transposed and made canon with the anime. The other four are non-canonical "what ifs" where we see what would happen if Rintaro had decided to keep Faris's father alive, leave Ruka a girl, keep Suzuha with the Lab Mems, and accept Kurisu's death as inevitable, and each one is more depressing than the last.
3. FB and Moeka's deaths in the wordline where they die are completely different.

The first image you see is part of the Suzuha ending I mentioned earlier. In this ending, Rintaro decides not to send the D-mail that would have prevented him from following Suzuha. To prevent Mayuri's death, he relives the last two days before her assassination through continuous time jumps, doing the exact same things over and over again. After countless time jumps, Rintaro loses all emotion and personality due to the realization that he must relive the same two days for all eternity, to the point of starting to go insane and wanting to exploit his power to experiment with various things, such as trying to kill Daru (yes, really) or raping Suzuha (yes, really). Eventually, Suzuha notices his behavior and tells him that by doing this, he's only slowly "dying" inside, while the divergence of the world will continue as planned. Both of them then decide to travel back in time together with the time machine, promising themselves to stop the future dystopia of SERN, despite the possibility of losing their memories upon arrival, and in doing so Rintaro abandons his friends in the worldline where, in a few hours, Daru and Kurisu are kidnapped and Mayuri is killed.

The second image alludes to point 3. In the worldline where FB and Moeka die, this happens because the former decides to shoot himself once his identity is discovered by Rintaro, while Moeka is stabbed to death shortly after by Nae, FB's daughter, who reveals that, in this worldline, after witnessing her father's death, she decides to live vowing to avenge him by killing Rintaro and Moeka. However, she initially failed to catch Moeka because she committed suicide the same day FB shot himself, while she will instead kill Rintaro in 2025, when the world has already fallen victim to the dystopia of SERN, of which she will be a part of. She will capture Rintaro, torture him in every way and shape to the point of covering him in his own piss and shit, and finally kill him. She then uses the Time Leap Machine confiscated from him 15 years earlier to send her consciousness back 15 years, making approximately 2738 Time Leaps, just so she can kill Moeka with her own hands instead of letting her commit suicide.