Easy way to beat Bowser & Bowser Junior
In stage 8 there is a Mega Mushroom House.
Once you're at the second castle, go back and use the 5 stars to open it and collect the Mega Mushroom.
When you come to fight Bowser And Bowser Junior, use the Mega Mushroom to run straight over them and win the game easily.
Theres loads more info this game, right here, with some cheats and tips, answers and New Super Mario Bros walkthrough.
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