15 Defense Steam CD Key

Fight them all! This game gets you plunged into a tough fight on the bottom of some imaginary sea. Watch it out, enemies never sleep! Resist their attacks and improve your survival time by upgrading your skills and talents. The game is aimed at a wide audience. It can be played occasionally, for killing time. Yet, it enhances thinking and mind reaction, since its game logic is based on that of a table game “Fifteen Puzzle”.