Map has the same rules as regular skyblock, just with bigger amount of islands. The main thing that makes the difference between this and the other maps of this kind is the additional islands that floats around and creates possibilities for further development of your survival. Your main goals will be: to build a home, have enough food, expand the main island and to reach the others.
How to install maps:
Download .mcworld file below
Open file using any file manager to import it into Minecraft PE
Open Minecraft Pocket Edition and look for the map among your worlds