Добавил: The DSystem
This mutator gives all players a jetpack to fly around with. Players activate it by pressing and holding down the Jump key/button. Releasing Jump turns the jetpack off.
Jetpack has been tested both offline and on a dedicated server, but not with multiple clients. If you're able to setup a server and test with multiple people connecting, please let me know so I can resolve any issues that might exist in that scenario.