Type 3 or Out-universe links are all those reference that imply any kind of relationship between two series, while not being actually linked within their universes. It's called "out-universe" because the link only happens in the real world, not within the fictional universes.

What is a type 3 or out-universe link

Every reference in a series to another series, if it doesn't imply anything from the referenced series to also exist in the referencing series.

Appearances in a series of elements only similar to those from another series.

Two series sharing some history together such as being released together in a boundle or both being part of notable events.

Format crossovers.

What is NOT a type 3 or out-universe link

Every link that can be classified as a type 1 or a type 2 link.

Everything that is not a fictional link.

Direction of type 3 links

A type 3 link is directional when it's a series to reference the other one. This may be any kind of intentional similarity between the two series, or any minor reference.

A type 3 link is undirectional when the two series are linked from sharing some history. This may be being released together in a boundle or both being part of notable events at the same time.

Type 3 spinoffs

A Spin-off series is of type 3 when the spin-off only takes stylistic elements from the parent series and uses them as defining elements in its own. This often corresponds to the spin-off being considered a "spiritual successor" to the original series.

Type 2.5 links

Main article: Type 2.5 link

Type 2.5 links happens when a series uses elements similar to ones from another series to make them fictional in its own. This is considered a particular type 3 link since in fact it's still a just a minor reference between the two series, but it might be notable distinguishing them sometimes.

When talking about links in general in this Wiki, type 2.5 links are considered the same as type 3 links, unless specified otherwise.

Type 3 links in Crossover Wiki

See also: Links in Crossover Wiki pages

In this Wiki type 3 links are treated like any other link type, but specifically:

Type 3 links are indicated in italic when graphically representing them. For example:

Series A Arrow R Series B

indicates a directional type 3 link from Series A to Series B.

The explanation images used in link pages are:


Series A5Arrow R Series B Directional type 3 link: the arrow indicates that an element from Series A, represented as a yellow smiling face, was referenced in Series B, while not actually appearing it, with the reference being represented as a green face, which is a modified version of the original one.


Series A6 Dash Series B Undirectional type 3 link: the two series are related in some way, so they are represented being near, but their universes aren't actually linked.


Series A2 Double Arrow R Series B Type 3 spin-off: The big arrow indicates that the whole Series B exists as a spawn of Series A, but it only features elements inspired from the ones in that series, and this is represented by the green face, that is a modified version of the yellow face.