Psionics (role-playing games)

Psionics, in the context of role-playing games, is a broad category of fantastic abilities primarily distinguished by one or more of the following common features:
 * Magic-like abilities including:
 * Telepathy and/or mental domination
 * Telekinesis
 * Teleportation
 * Illusion
 * Time travel and/or manipulation of the flow of time
 * "Energy"-based offensive abilities (e.g. pyrokinesis)
 * Purely mental offensive abilities with no physical manifestation
 * Exclusive or near-exclusive association with highly intelligent beings
 * Mental discipline required for training and use
 * Lack of arcane ritual, gestures and other typical features of magic
 * Lack of physical components required for use

Systems
The following systems present psionics, each in their own way.

Dungeons & Dragons
The Dungeons & Dragons system provides an extensive set of optional rules for psionic characters in the Expanded Psionics Handbook. Psionics in D&D are desgined to be on-par with magic, and so cover nearly every mechanical ability that the magic system does, organized into categories remeniscent of the Wizard's schools.

GURPS
The GURPS system also provides a broad range of psionic abilities, game-balanced with its magic system. In the case of GURPS, categories of ability are "powers", purchased and refined by the player during character creation.

White Wolf
While White Wolf's World of Darkness does not specifically call out psionics by name, Mages often work magic through a paradigm of psionic power.

Babylon 5, Star Trek, Star Wars, et al.
Many popular role-playing games based on popular science fiction settings have at least telepathic powers available to players. Examples include the Psi Corps and other telepathic characters from Babylon 5, Vulcans from Star Trek, and the Jedi from Star Wars all of whom have demonstrated various degrees of psionic abilities ranging from telepathy to telekinesis to mental domination.

Champions/Hero System
The Hero System implements a wide variety of mechanical abilities, many of which are compatible with (and often used to build) psionic characters (often refered to as "mentalists" in Champions).