RPG is a genre of gaming that generally puts the player in direct control of a character, or party of characters, abilities, items, skills, and other attributes.
Rather than being an action or "twitch" game, many RPGs are turn-based (even when battles usually play a major part in the game), where gameplay will not resume until after a side has exhausted all actions (whether it be completing an attack during a melee, using an item or magic action against an enemy, fleeing, etc.). Exploration also usually plays a big part in RPGs (which RPGs can share many traits in common with the Adventure category as well), as "dungeon crawler"-type RPGs can have treasure and item caches as well as their share of enemies to do battle with to raise one or more players' experience, hit points, and other attributes.
The lone Vectrex RPG to date is Dark Tower.
This article uses material from the RPG Gaming Wikia article and is licensed under the Creative Commons Attribution-Share Alike License.