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You have to be mini Mario and complete it the same way as you complete world 2 to get to world 4
complete all the levels duuh
Complete all levels on world one (which is easy).
Complete the game as Mario, then press Select on the World Map.
Complete world 3 or 4 or get the world 2 cannon
Super Mario World
The cannon in new super Mario bros takes you from one world to another without having to complete the world (ie it shoots you into another world)
You just have to be good.Practice makes perfect they say.
Complete level six on world eight.
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skills
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