Defend your base from invading machines in this sci-fi shooting game with a touch of tower defense game play, Gunfire Echoes! The story tells us that earth has turned into a wasteland after the enemy's invasion. But somehow, humanity has survived and been fighting now for decades. The enemy invaders are now planning on a massive attack. And you're ready to face them all. Shoot down all the invading mechanical troopers trying to destroy your home. You have a selection of weapons at your disposal to stop their attacks. Level your soldier up and upgrade your defences and arsenal. Gain additional exp by making headshots and combos. Can you stand and fight for humanity? Be ready to give them the echoes of your gun fire.