No, Godzilla from the 2014 film and the 2019 film "Godzilla: King of the Monsters" are not the same entity, but they are part of the same cinematic universe, known as the MonsterVerse. The 2014 film introduces Godzilla as a massive prehistoric monster awakened to restore balance against other threats. In the 2019 sequel, Godzilla returns to battle new kaiju, including King Ghidorah, further expanding his character and the lore of the MonsterVerse. Both films feature the same Godzilla design and continuity, but depict different stories and challenges.

Yes, "Godzilla" (2014) was a commercial success. Directed by Gareth Edwards, the film grossed over $529 million worldwide against a budget of around $160 million. It received mixed to positive reviews from critics and audiences, praised for its visual effects and direction but critiqued for its human characters. The film revitalized the Godzilla franchise in Hollywood, leading to sequels and spin-offs, including "Kong: Skull Island" (2017) and "Godzilla: King of the Monsters" (2019).

In "Godzilla" (2014), the meltdown at the Janjira Nuclear Power Plant was caused by the activities of the MUTO (Massive Unidentified Terrestrial Organism), which fed on radiation. The MUTO's emergence and destructive behavior disrupted the plant's operations, leading to a critical failure. This incident resulted in a catastrophic meltdown, which was initially covered up by the government, setting the stage for the events that follow in the film as Godzilla rises to confront the MUTOs.

As of October 2023, "Godzilla" (2014) is not available on Netflix in most regions. Streaming availability can vary by location and may change over time. It’s recommended to check your local Netflix library or other streaming services like HBO Max, Amazon Prime Video, or rent it on platforms like Google Play or Apple iTunes for the most current options.