Glitch to use any locked ball
Dune! Guide
This is a glitch that has been found in the game that lets you use any of the balls even if you haven't unlocked them yet.
The video below shows how this works.
EDIT: It does seem that this glitch has been patched in a recent update. If you are still using a version of the game that hasn't been patched yet you may still be able to do it.
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