Overview
Robots are advancing on the steel frontier, and your mission is to hold the defensive wall. Buy turrets, merge matching units, and move your strongest cannons into the active firing row. Place and upgrade mines, survive increasingly dangerous waves, and prepare for a slow heavy boss every fifth stage. The campaign contains 50 waves, 50 enemy types, 12 turret levels, and 6 mine levels. Defeat restarts the current wave without erasing your assembled defense or progression. Reach the final assault and secure the frontier!
Videos and screenshots
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How to play
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Open the game
Press Play now and the game opens on its own screen.
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Follow the in-game instructions
The controls and goals are shown inside the game as you play.
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Use the game menu
The floating button over the game reloads it, saves it to your favourites, or takes you back out.
