RPG (Role-Playing Game) games involve players assuming roles of characters in a fictional world, making choices that develop the character and influence a story, often featuring progression systems like experience points (XP) and leveling up, skill customization, and quests, originating from tabletop games like Dungeons & Dragons but now encompassing vast video game genres from epic single-player adventures to massive online worlds. The core elements are player agency, character growth, and narrative immersion.