Gemini is the second part of
Ball Revamped III. Try playing
Ball Revamped III: Andromeda first before playing this one,
but if you want to play this one first, go ahead. In addition to
switches, there are stars which have multiple effects. Stars can
decrease/increase size or show/hide walls. Lightly tap the up
button to keep the ball suspended, and start to work in the left
and right arrow keys to get going!