For some reason it only saves when you finish a castle.
You have to complete a Castle or buy something with your Starcoins to save. i no its pretty rubbish x ;)
every time you complete a dark castle or spend 5 starcoins to get a mushroom you can save the game.
The new super Mario brothers
no she is not in the game
you can only do that after you finish the main game: on the menu where you select your save game press R+L and then the save game you want to play, and TADA! you play as Luigi! have fun!
No.
Complete the game as Mario, then press Select on the World Map.
New Super Mario Bros U is the game created afterwards.
You have to get red flags on the level next to it.
no,you can't use yoshi in new super mario brothers unless you are playing the game on the wii then you can get yoshi.
After you beat a boss you can save. Or if you have already beat a world you can go back to that world and save anytime
SMNE01