Blast your way through the hordes of alien ships! The invasion of the extraterrestrial Zionix fleet has just started, and it's your job to stop them! The invaders have no mercy for humans, so shoot down everything in sight. Save the world with your tank armed to the teeth with a variety of deadly weapons! Upgrade your tanks and defeat alien metal monsters in this highly explosive shoot'em up game! Featuring: * Intuitive, uncomplicated gameplay * Different types of tanks to choose from * A wide array of tank upgrades * Powerful in-game power-ups * Detailed, diverse episodes * Hordes of alien enemies * Epic boss fights