How to Play
Combine rivet turrets, frost beacons, mortars and crystal arcs. Every fourth wave brings a boss. Each new region changes the path and refunds your towers in full for rebuilding. Glowing supply crates offer bonus funds between waves.
Defend five quarry regions across 20 waves with four tower types, upgrades, target priorities, armored raiders and bosses.
Combine rivet turrets, frost beacons, mortars and crystal arcs. Every fourth wave brings a boss. Each new region changes the path and refunds your towers in full for rebuilding. Glowing supply crates offer bonus funds between waves.