Invadurrs are attacking the city. Use their own nano-tech ink against them by drawing your own defenses.
Draw rockets, barriers and more to stop the Invadurrs from hitting the city. You are the last line of defense!
Draw a horizontal line to make an Invadurr blocking wall.
Draw a vertical or diagonal line to create a rocket to and shoot down an Invadurr.
Unlock more shapes to draw as you play!