Soon, the Pro Version will be FREE!!! Download it!!! It has many levels and difficulties. Best of All. its AD-FREE!!!After being decimated in an interplanetary nuclear conflict by their enemies, The Nxtros, The Zannorgs are preparing to fight back. They plan to strike at the heart of the enemy with a firebombing campaign on the Nxtro's homeworld. However, the Nxtros will not go down without a fight. Protect the "Nebular" during the siege. Use motion controls to aim your cursor and shoot down missiles before they reeach the Nebular! Best of all, this game is AD FREE!!! Also please visit our newly updated website to check out our other applications! There are many levels and difficulties, so enjoy!Also, please take a moment to actually read the instructions!Click on the blue orb to change the difficulty and the different levels. The Green orb has the background and instructions. If level one is too easy, then try level 2. It will be more challenging.