Download Cosmic Invaders
Space Invaders is one of the most known games worldwide, especially because many people managed to play it in arcades throughout the 80s and even later. A lot of fan-made inspired games appeared after the original one and Cosmic Invaders is one of this games. The difference is that Cosmic Invaders is created as a tower defense game.
On Earth you will have the possibility to build different cannons in order to protect your land from alien invaders. There are 3 different types of cannons that can be built and you can also upgrade them. Keep in mind that at each 10th level you will face a boss.