Brink of Extinction is a challenging tower defense game set in the ruins of human civilization. Battle swarms of insects over 15 campaign levels and 8 continuous mode levels. At your disposal you have an arsenal of brutal weapons, ranging from machine gun turrets to plasma and rail turrets. Following dramatic changes to the eco system, insects started mutating, growing into large and vicious creatures. You lead an advanced group of human survivors tasked with the collection of resources and protection of the remaining human populous. Gather 72 achievements to unlock the entire achievement display area, a trip through the different scenes encountered in the game. View turrets and enemies in detail as you encounter and unlock them in the campaign, and learn about their respective weaknesses and strengths. Find [15] pieces of the story hidden in the campaign to complete the entire background story of the game.