Protect six cities from a sky full of incoming missiles. Build overlapping chain-reaction explosions and survive wave after wave.
Move the mouse to aim • Hold left click to launch Choose battery with 1 / 2 / 3, or A / S / D RIGHT CLICK fires a collected NUKE • Space shoots • P pauses • Touch: drag finger to aim & auto-fire; tap LEFT/CENTER/RIGHT to pick battery Tap NUKE to fire a collected nuke Blast glowing power-up orbs to collect them! Grab R for RAPID FIRE +500 AMMO, B for RED BOMB, 4 for QUAD SHOT, N for NUKE, and A for extra AMMO! Miniboss appears every 3 waves • Destroy it to advance.