Jumbo rockets are significantly larger than other missiles and have the alien symbol on them (a skull with three eyes and no nostrils). They spin around in a straight line.
Jumbo rockets will fall from the top of the screen. It is slower than rockets and homing rockets, but can be very hard to destroy because of its high health.
While in the air it will spin, and when it hits the ground it explodes in the biggest explosion in the game, being so powerful that it can destroy shields in one hit. With the right weapons, it can be destroyed before it reaches the ground. The explosion of the rocket can still harm the player,if player is close to the rocket when it hits the ground.