Rumors of an army of robots on their way to Emerald Hill and these mean machines aren't here for a visit. It appears that Dr. Robotnik has finally created his mass reproducing machine and he has amassed a huge army to do his evil bidding. To retaliate, Dr. Light has created a special ship designed to feed off from Sonic's super speed light to fire lasers at a rapid rate. Your job is to destroy every last robot before they reach the city and wreak havoc on his beloved hometown. You will earn points for every ship you shot down and with enough points; you can unlock better weapons and upgrades to increase your firepower. Defend your city from maniacal robots in Sonic Sky Impact.