How does the concept of time travel work in 'time travel visual novel'?

In many 'time travel visual novels', the time travel mechanism often involves a specific device or event. For example, in 'Steins; Gate', it's the Phone Microwave (name subject to change based on the translation). By sending messages through this device, the characters can change the past and thus influence the future. The way it works is that the device alters the past in a way that creates a new timeline, which the characters then have to navigate.

In most baby Harry time travel fanfics, it often involves some sort of magic object or spell. For example, a magical amulet that was passed down in the Potter family might have the power to send Harry back in time when he touches it as a baby.

In some time travel novels, it's through a machine. For example, in 'The Time Machine', the protagonist builds a device that can take him to different points in time. It's a very mechanical and scientific way of time travel.

In some RWBY time travel fanfiction, it might work through the use of a special relic. The relic could have powers that are not fully explored in the original series but in fanfiction are used for time - traveling. For example, it could be activated by a specific combination of Dust or a certain type of Grimm blood.

In many time travel book fictions, it can work through a device. For example, in 'The Time Machine' by H.G. Wells, the time traveler uses a literal time - traveling machine. Sometimes it's magic, like in some fantasy - based time travel stories where a spell or a magical object enables the journey through time.

In many time travel light novels, it often involves magic or some kind of supernatural power. For example, in 'Re:Zero', Subaru's 'Return by Death' is a mysterious ability given to him, which is like a form of time travel. In other novels, it could be a portal or a spell that transports the character to a different time or place. Sometimes it's a result of a scientific experiment gone wrong, like in some science - fiction - inspired light novels.

Time travel in time travel fiction books can be quite diverse. There are those that rely on time machines, which are often elaborate contraptions with dials and controls to set the destination time. In books like 'The Time Traveler's Wife', time travel seems to be a genetic anomaly that causes the main character to involuntarily jump through time. There are also stories where time travel is the result of a time - loop or a rift in the space - time continuum. This can create really interesting plot twists and opportunities for exploring different eras and events in the story.

In many Narnia time travel fanfictions, it often involves magical objects. For example, a enchanted hourglass might be the key to traveling through time. The sand in the hourglass could have the power to send the character to a specific time in Narnia's past or future.

In Homestuck time travel fanfiction, time travel often involves the use of the various time - related mechanics in the Homestuck universe, like the Green Sun or the Scratch. The Green Sun, for example, could be a portal through which characters can travel to different points in time.

In some Bridgerton time travel fanfictions, it could be a magical object that enables the time travel. For example, a mysterious locket that transports the wearer to different eras within the Bridgerton world.