This fancy form of technology is the main form of speed and flight for Furon invaders who come across a high gravity planet. The jetpack allows a Furon to move at great speeds and provides faster mobility, able to jump to great heights and makes the Furon virtually invincible until the invader lands when the power runs out. In the 1950s, the jetpack was used by Crypto to jump over obstacles and avoid enemies. However, it did not have enough power to get to higher buildings or provide a soft landing. In its further development in 1969, it allows Crypto to jump and glide for long periods of time depending how high the take off point is. In the early 1970s, during Pox's business scheme known as Big Willy's Restaurant, the jetpack (thanks to an unlockable) allows Crypto to obtain fully fledged flight without the pack shutting down. In the mid 70's, the jetpack unlike its predecessors, has greater maneuverability and thrust which allows Crypto easier control over his jetpack despite what he likes. He basically preferred the silly sounds like in the cartoons over performance and quality.