Build a defense. Protect the core. Understand every tick.
Three defenses. One power core.Build on the marked pads and stop the incoming robots.
Choose Pulse, Frost or Mortar, then click a marked circular building pad. You can also use 1, 2 or 3 and Tab/Enter for the build-site list below.
Pulse is precise and fast. Frost slows robots. Mortar damages groups. Combine them where the road bends to keep enemies in range.
Start a wave when ready. Earn credits from defeated robots and cleared waves. Click a tower to upgrade or sell it. Robots reaching the core damage it. Survive every wave to win.
Pause freezes the simulation. The diagnostic view shows ranges, targets and enemy progress. Edition 3 includes this game, its map workshop and explained source in the $19 book bundle.