Thats a perfect description of what artistic genre it is. Video games are creating their own virtual worlds, where the world itself a piece of interactive art viewed from various player perspectives(the roles they take). "Getting lost in" is actually expirience of immersion(the gameplay flow) and belonging(with social circles/engagement with virtual characters and other players). Good games are meta-narratives which engage players as pieces of the world(background) completing the narratives(as the protagonist of quests/events). Like a grand painting where the main character is you and your virtual "social circle".