Use the left mouse to build the defense.
Select the campaign and play free online Endless War: Defense action game! In the new battlefield, you will become the commander of a troop. You need to build the own defense and maintain the position by fighting against all of the attacks of the enemy soldiers in Endless War: Defense. Rewards will belong to you once you survive and win. So, you should choose the appropriate units and weapons wisely before the first wave comes. Try to earn money to unlock upgrades! Good luck!