Line Defense plays best in landscape on a screen at least 1024×700. You can keep playing here, but controls may be tight.

Line Defense

Credits
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Core
—
Progress
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Phase
Ready

Hold the line

Enemies march along the lane toward your core. Build towers beside it to stop them.

  • Pick a tower, then click an open tile beside the lane to build it.
  • Start each wave when you are ready. Kills and cleared waves earn credits.
  • Select a tower to upgrade or sell it.
  • Every enemy that reaches the core damages it. Survive the final wave to win.

Keyboard

With the battlefield focused: arrows move the cursor, Enter builds or inspects, 1–5 choose a tower, U upgrades, F toggles 2× speed, Space pauses, Escape cancels.

Enemy markers

Each enemy type has its own shape. A heavy white outline means armor, a blue ring means slowed, a flame means burning.