How can I make it so that any account on my Xbox 360 can access one of my worlds even when I'm not playing? because right now my brother can't see the worlds that I have created but I want him to be able to play them
The Xbox version of the game is expressly designed such that the creator of the world owns it entirely. Therefore, that player must 1) launch the world and 2) be playing in it for others to join and have access. There is no way, within the confines of the Xbox TOS, to override this feature. Several suggestions have already been made to the developers regarding allowing various levels of file sharing, including the sharing of files with alternate profiles on the same Xbox. Unfortunately, they have not, as yet, indicated that they might entertain making changes to accommodate this.
How to access a world save from any account