What has been randomized?

What has stayed the same?

What differences are there from the original game?

There are a few changes from the original game which enhance gameplay and prevent you getting stuck. The Japanese 1.0 version is used as a base ROM because it allows use of some exclusive glitches in some of the advanced game modes. You may see some Japanese text but this will eventually all be removed.

What other changes have been made?

There are many changes beyond what is listed above. A full changelog can be found here.