http://www.techtree.com/techtree/jsp/article.jsp?article_id=68266&cat_id=517
As of now, the Nintendo DS and the Game Boy Micro are beating the pants off of XBOX, PS2, and the PSP, all combined, in Japan. And guess the kind of games people are playing on those? Pokemon, Nintendogs, Madagascar and a whole lot of other non-photo-realistic, yet fun games.
Super Mario Bros, the original, is the world's #1 bestselling game of all times. Tetris #2, then two more Mario iterations and The Sims grabs the #5 spot, another Mario game at #6, and GTA San Andreas at #7. More Mario and GTA till 12, and then at #13, you have NFS Underground 2, followed by the first Harry Potter Game, and then, Halo 2. Only two "realistic" games in a list of 15 best sellers, and both below #13. Want more? The Sims has actually sold a total of 28 million copies if you count in the various expansion packs they released for the game.