Use Blockly to learn how to create a Space Invaders game! Enlist now to command an alien space fleet to save your home planet from global catastrophe. Build a fleet of drone ships using advanced top-secret technologies, like algorithms, sequence, iteration and branching. On your journey to Earth, meet the Doctor, slingshot around a black hole, land on distant moons and mine for valuable resources. Your mission is to outsmart Earth's Global Defense System in your quest for precious water. We are