I've gotten the game on Saturday, I've beaten the final boss(es), yet I still don't know how to get into Worlds 4 and 7. Is it some sort of secret exit from certain stages or something? Please help.
In order to reach World 4, you need to defeat the World Two boss (Mummipokey) as Mini-Mario. Not standard Mario, Blue Mushroom Mario.
There are two ways to get to World 7; either defeat the World 5 boss (Petey Piranha) as Mini-Mario, or use the World 4 Cannon (secret exit of World 4 Ghost House).
NOTE: You can only damage enemies as Mini-Mario with a Ground-Pound.
In order to reach World 4, you need to defeat the World Two boss (Mummipokey) as Mini-Mario. Not standard Mario, Blue Mushroom Mario.
There are two ways to get to World 7; either defeat the World 5 boss (Petey Piranha) as Mini-Mario, or use the World 4 Cannon (secret exit of World 4 Ghost House).
NOTE: You can only damage enemies as Mini-Mario with a Ground-Pound.