RPGs

RPG genre:
RPGs are not exculsively videogames, they started with board games such as Dungeons & Dragons, and Tunnels & Trolls, to play them, you needed a character sheet on which to record your stats, books containing the rules, monsters and scenarios, seven multi-sided dice, and ideally, a good imagination.
You had to deal with various scenarios planted by the dungeon master.
These games created the basic modern-day RPGs features, such as HP (Health Points), EXP (Experience you get when defeating enemies), levelling up, races (Human, Elf, etc.), classes (Wizard, Warrior, Rogue, etc.).
Videogames came, and made RPGs which could be played solo, you didnt need a Dungeon Master to choose your path.
Videogame RPGs were very succesfull, some of my favorite franchises would be
Final Fantasy
Mana series
Persona Series
Chrono Series
Mother Series

They all have similar yet very different aspects.
Most RPGs deal with Dragons, Wizards, Warriors, some deal with war, and sci-fi, but there are special ones, my favorite ones
Mother and Persona series.
Both of them take place in modern day cities, but still have classic RPG aspects.
In Mother, aliens try to take over the world, and a boy, unknowingly embarks on an adventure to save the whole world from corrupted policeman, mutated animals and trees, etc.
Persona talks about facades, the many faces people use when talking to different people.
The Shadows (your repressed and true personality) goes mad because one self does not accept it.

MMORPGs are RPGs played over the internet, with people from all over the world, you complete quests and fight mosters in order to lvl up, but what makes this genre so unique, is the interaction you make with people you meet.
You get new friends, you train together, and have fun.
Ive always been a fan of RPGs, I play them daily and will never stop doing so.