Lucky Strike / Drone upgrade. Adds change to fire extra missile.
Thick Armor / Tankbot upgrade. Adds chance to block incoming missiles, nullifying their damage.
Critical Hit / Droid upgrade. Adds chance to critically hit targets causing 30% more damage than usual.
Blue / Shock upgrade. Adds chance to discharge additional electron bolt.
Red / Burning Laser, Particle Beam and Unmaker Omega upgrade. Adds chance to cause 20% more damage than usual.
Orange / Adds chance cause additional surface explosion.