A story in which the characters we know are seen in a reality that's somehow different, often disturbingly so. If they can access multiple alternative universes ... Superboy (Comic Book) · The Multiverse · Crossover Alternate Univers · Fic

When making a timeline for a fictional universe, there are many Speculative Fiction Tropes that tend to pop up, especially if it is based on the real world.

When they go back centuries, and even further and further, long before copyrights and trademarks, the Shared Universe turns into one or more actual mythologies.

The multiverse, also known as the megaverse, omniverse, or outerverse can encompass an infinite number of possible and impossible "moments", some of these ...

A page for describing Main: In-Universe. In their original form, tropes are storytelling devices meant to convey a concept to an audience.

It is a crafted combination of setting-elements that define the rules for how the world works and sometimes provides for sharing of characters and continuity.

This article deals with the current scientific consensus about the evolution of the Universe from the Big Bang to the present epoch plus a peek to its ...

Expanded Universe refers to everything that is not the primary medium. All that other stuff. This can create a schism in fans. Some believe the entire ...

This trope covers settings which feel like Alternate History in this way, but don't actually have a specified point of divergence.

The Earth Is the Center of the Universe trope as used in popular culture. Earth is a Weirdness Magnet for cosmically significant events.