Trying to support 1.21.2 & 1.21.3.
Bug fix.
Trying to support 1.20.
Problems will be fixed soon.
Add new Create World Screen to the client.
Also can be toggled in Config Screen.
Allow you to replace vanilla background globally with new background as the same of New Title Screen.
And now, new background will have the correct size.
Add three pictures to choose as background. Total 4 now.
All of the pictures are Offical Artworks of 1.21.x .
The first version.