Grand Theft Auto
In the game, CJ carries out a mission for The Truth in Area 69 secret military base. Truth asks CJ to steal a certain item from within the base's interior during this mission called Black Project. Once CJ has fought his way into the laboratory, he finds the protoype jet pack the army has been testing, and he takes it. He gives it to The Truth, but eventually gets it back during another mission for The Truth, called Green Goo. After completion of this mission, CJ gets to keep the jet pack and it appears near The Flying School Office at Verdant Meadows, and will continue to re-spawn.
Club Penguin
This was part of a special event in 2009, no longer available.
Poptropica
See the related question below.
Chat with our AI personalities
In the beginning of the online match there is a blue options menu. It should be on the right of your screen. You scroll to the jet pack option and press A. Once you are in the match press LB and that will activate your jet pack. ( the jet pack works better if you jump first)
Jet packs are jet-powered backpacks. A jet intakes air, compresses it with a turbine and pushes it out the back, thus creating propulsion.
scroll in all the way until you cant see your charature. Face the sky with the mouse and click. you should fly.