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Role-playing games let you assume the role of a protagonist, customizing their abilities, equipment, and appearances. Through exploration, dialogue, and strategic combat, players navigate worlds, uncover lore, complete missions, and level up their characters.

Science-fiction. Commonly including things like aliens, advanced technology, and settings of outer space or distant planets. 

Focused on using its text, moreso than its visuals or audio, to tell the bulk of its story/plot. (Still can have great audio and visuals, though!)