A few definitions to explain some key words.
NPC: Non Player Character. It is a type of character controlled by the game itself and with whom one can interact, usually in a friendly manner (talk, transaction, …).
Point&Click: A Point&Click is a game where the player’s main actions are to move the mouse pointer on the screen to find interactive points and to click on them to trigger some events. Historically, games associated to this genre demand neither reflexes nor sudden movements.
RPG: A RPG (Role Playing Game) is a game in which the player embodies a hero who will gain new abilities and equipments over time to face every challenge coming his way.