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• On the bonus stages, if you do absolutely nothing while the enemies dance, you will get a "secret bonus" which can range from 10000 to 25000 points, depending on what dimension you're in.
• Starting from the fourth dimension, the very last enemy remaining on the stage will try to escape. If you manage to kill it before it does, it will leave behind a pink Warp Capsule that will instantly transform whatever kind of ship you have into a Triple Ship. (This does not affect your remaining lives.)