I love role playing games being able to act out the roles within a narrative.
Really what kind roles do you act out
Well, In the Original Form its through discussion type, whereas In live action, the players physically perform the character actions.
That sounds interesting.  What kind of action do they perform?
Some RPG perform single player roles where they undertake quests. Thats my favorite.
 Is this role-playing in a video game setting?
Dungeons (MUDs) and their graphics-based successors, massively multiplayer online role-playing games (MMORPGs). Role-playing games also include single-player role-playing video games in which players control a character, or team of characters, who undertake(s) quests, and may include player capabilities that advance using statistical mechanics. These electronic games sometimes share settings and rules with tabletop RPGs, but emphasize character advancement more than collaborative storytelling.
This type of game is well-established, so some RPG-related
the tabletop role-playing game (TRPG), is conducted through discussion, whereas in live action role-playing (LARP), players physically perform their characters' actions. In both of these forms, an arranger called a game master (GM) usually decides on the rules and setting to be used, while acting as the referee; each of the other players takes on the role of a single character.
Several varieties of RPG also exist in electronic media, such as multiplayer text-based Multi-User