Super Mario Bros. X Forums

This only works if you are making a Hub based Episode (No World Map). If you have a World Map too, it is physically impossible to do this unless you are making a Warp Pipe after you have (somewhat) beated a Level and leads you to a specific door you where entered in before.

Like bossedit said, check "No World Map" in the map settings, and then in the "Auto Start Level" box, enter the filename (including .lvl extension) of the level you want the game to begin with. The game will treat that level as the hub, so that level should be filled with doors that warp to other places (in their warp settings, input the destination filename and such). If you do all that correctly, then reaching any kind of exit in the destination levels should automatically return you to the correct hub door, including warps that only have "Level Exit (Ends the level)" checked. The game remembers what door you entered to leave the hub, so it simply puts you back there.

It's also possible to chain levels together using this method. This disables the save feature, though, unless you have 1 star per level and warps, in the hub area which you enter on game start, which require stars and warp you between two specific levels.

In "Yoshi's Island X" demo 1, did I not check no world map or sonething? Me and IMNBH4L couldn't save in the hub.