Both Super Mario Bros and the Japanese Super Mario Bros 2 (a.k.a. The Lost Levels) in one Game Boy Color cartridge? Yes! The game is more than just a simple conversion. After you've completed both SMB1 and SMB2 you can always play "Challenge Mode" here you must find a certain ammount of hidden red coins and Yoshieggs on each course. You can also try and complete the courses as quick as possible and through the use of a link cable you can play against a mate, racing to the goal post on each course.
There are some extras as well. In a special album you collect "photos" of various Mario enemies, that you obtaina s you progress in the game. There is also an calendar and a fortune telling game. Could Mario possibly get a better Game Boy Color debute?...