Gnome gamer
A so-called "gnome gamer" is a human being likely not to take part in social interaction and is much more present in their own comfortable gaming space.
A: Yo bro, I just did a sub 50 Inferno on OSRS (Oldschool Runescape).
B: Damn bro, you're a true gnome gamer!
B: Damn bro, you're a true gnome gamer!