In the new snapshot of minecraft (13w36b) there is a super secret setting in the options menu. when hitting the button an enderman-ish sounds play. Does it do anything or is it just a sound?
13w36b all it does is play mysterious sounds, however a new menu is expected in future snapshots.
13w38a clicking the button cycles between a number of shaders:
There are many more besides these three.
It plays sounds that have been changed just like the
protected by fredley Sep 10 '13 at 8:23
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