super mario bros for ds lite

[sweetpea1]

i can't seem to open world 4 or 7 on the above game, i've opened all the other worlds. can anyone help.

[Andy_G]

You need to look for a warp cannon (found by using coins to unlock areas of map). Can't remember exactly what to do or where.

Please look at this web site for help.

www.gamefaqs.com