Really is thrown into confusion! The enemy drops out the ultra multi- bombs, defends your city method is in airborne fires, clicks on [ sz ] with the mouse key to meet the bomb and to pull to other bombs place fires, surely do not let them explode in the city □□~ ultra needs you agile and the skill, otherwise is very quick can hang! May the black bomb with move collides another black bomb collision to be red cannot explode, may the direct mouse punctuation [ [ sz ] the red bomb be able to explode, the bomb plays in the detonation scope speech to finally can chain-like explode. Ultra satisfies a craving, challenges!