Groups

 

Multi-classing

Other (objects, etc.) concept

Class-based system where player can select multiple classes, though usually limited to 2 or 3. This often limits the development of the primary class.

38
games
18
platforms

The first video game about Multi-classing was released in 1989.

SSI, Nintendo and THQ has published most of these games

Note that this covers both simultaneous and sequential multi-classing.

However, this does NOT cover sub-classing in terms of sequential multi-classing, because the sub-classes are generally specializations for the primary class and can't be taken without the primary class. They can therefore be thought of as farther progression of the primary class. In MMOs, usually there's two sub-class choices for each parent class.
Related:
* Sub-classing

See also: classless (can appear nearly identical)