Factory Unlocked!

You've unlocked the Collector tower and the Factory! Open the Factory tab on the left panel to build conveyor belts , splitters and assemblers .

The Collector picks debris off the battlefield, the belts carry it, the splitters route it and the assembler turns it into materials.

Your towers can then load special ammo built in the factory. Switch it on or off per tower in its popup menu.

The line has an UPKEEP: each piece costs gold every second, and the bill grows as the waves go on. Run out and the line simply stops — nothing is destroyed, and it starts again as soon as you can pay.