Every player in Tribes gets a jet pack which can be used for short flights or speed boosts. It's one of the most important aspects of game play that each player must master. I felt that the jet pack given to each player provided a great twist to the normal deathmatch dynamics, but sometimes it was more of a hindrance than a help. Due to a realistic physics engine I often found myself sliding down the mountain after a long jet pack jump. This gives a very unwelcome feeling of helplessness, but after a while you get used to it, and learn to control your jumps and landing speeds better to avoid those slides from happening.