The humans are being attacked by aliens! You must hire troops and build towers to protect the base and destroy the enemy crystal. You earn money by killing aliens. Money can be used for troops and towers. each aliens have special skills. Aliens Red - Just a normal alien. Blue - 2x the speed of Red. Yellow - 2x the health of Red. Green - When dead, spawn 2 weak aliens Pink - The toughest of them all. when damaged, teleport to random location, ruining defenses. Troops & Towers Rifle - Just a week troop. Machine Gun - Better version of Rifle. Bazooka - Strong, fires explosives. Laser Tower - Firepower is the same as bazooka, but doesn't get damaged. Don't attack enemy crystal directly. Ice Tower - Weak firepower, but freezes aliens in place for 2 seconds. Great against pink.
