Fortify your bastion and clear the path of enemies. You will have to work hard to destroy them all, because their numbers will only grow, and the armor will become become stronger! In the game you have to choose what structures to build; attacking structures, or economic structures that generate profits that can be spent on more upgrades. Towers can be combined, but it is expensive, much more expensive than building new towers. Eventually you will run out of free space, which will create additional difficulties. Very carefully plan your defense, and your fortress will be truly be impenetrable and you will be able to survive even with the most powerful attacks. The game is exciting, and the suspenseful music creates an atmosphere of tension. This game helps you learn how to make difficult decisions.