I would not want to be Mario. Running around and jumping on wildlife would become monotonous after ten minutes, and hitting solid brick blocks with coins in them would probably fracture several fingers. Mushrooms are okay, but I could not eat nothing but them all day. That kind of unbalanced diet must be why he is so weak, he can be killed by a moving turtle shell.
I know it is an anime/manga, not a game, but it's plot is based 'round a game...Anyway, Sword Art Online. Even if I got trapped there , it still looks fun.