If you get the bug where you're stuck moving in one direction, click exit, select new game on another difficulty, break out of the cage, and hit one of the switches. You should then be able to return to the difficulty you were on without the glitch.
Love this game!
The ONE thing I don't like is how hard it is o see the reticule; I had to pause several times to find it.
My best score is: 466745, beat that!
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