It has taken some time for them to reach us, but indeed they have arrived. We knew they were coming and we are prepared to fight. The circles are on the warpath. They have had enough of our shenanigans. But we will not go quietly into the night. We will not vanish without a fight. Pilot your ship and send them back from where they came from!
Fight through each level, collecting upgrades as you go. Build up your ship to defeat the every growing number of bigger, faster, and stronger enemy circles. And when you reach the final boss, hopefully you will be prepared.