Nintendo DS

Recently, my wife bought a Nintendo DS Lite, and now she is enjoying "Professor Layton and the Strange City."

It's an RPG where a player has to solve puzzles or answer quizzes to go forward.
Although I had almost no interest in so far, I like this game.

BTW, she solved about 80 puzzles out of 120 in total at this moment, and I'm asked to solve difficult ones (for her) about five times a day. :o