There is no way to play as Yoshi in New Super Mario Bros. You can play as Luigi, and you can ride a Yoshi in New Super Mario Bros. Wii, but Yoshi does not even appear in the New Super Mario Bros. story.
If you are talking about the wii version then first you hit a ? block. Then if there is a Yoshi egg green blue pink or yellow the a Yoshi will come out. When it does jump on him. You will then access to ride Yoshi's back. But be careful! Don't be useless with Yoshi or he will run away!
You can't. Yoshi only appears in the minigames of the DS version.
you cant because sonic is mad by sega .
You can't.
you can not play as Yoshi in new super Mario bros DS
You cannot play as Yoshi. On the Wii I believe that you can play as Yoshi.
You can't.
You can't ride or play as Yoshi in the DS version.
There isn't any code for that.
I am very sorry, that is not possible.
you can not.Only in new super Mario bros wii you can ride Yoshi but you can't play as him
No, but when Super Mario galaxy 2 comes out in 2010 you can.
No, you cannot play as Bowser in the new "Super Mario Brothers" game.
No. The only playable characters in New Super Mario Bros. are Mario and Luigi. The minigame mode will also allow you to play as Yoshi or Wario but not Baby Bowser.
No. Because you play as Yoshi from the start.
No, You Can Only Play As Mario in N64, However, You Can Play as Mario, Luigi, Yoshi, and Wario On Super Mario 64 DS!