Click a unit, then a building to take it. Drag to move the map, right-drag to turn it, scroll to zoom. The first wave comes in 30 seconds, and you get 30 more after each one.
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3 / 10
500+0/min
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Wave 1 / 10
HQ
Level 1
You won't know how many machines are coming until they arrive.
Main pile: 0 scrap
Paused
Store
Unlock units with your main pile. Once unlocked, you can train them in any level.