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Terraria (/ t ə ˈ r ɛər i ə / ⓘ tə-RAIR-ee-ə [1]) is a 2011 action-adventure sandbox game developed by Re-Logic. The game was first released for Windows and has since been ported to other PC and console platforms.
The game is formally "won" by launching a rocket. Constructing a rocket requires a massive amount of resources, motivating the player to set up a sizeable, effective factory in order to achieve this goal. After launching the rocket, the player can continue to build their factory.
A rocket (example ship "Kerbal X") sitting on the launchpad with the Mun, Kerbin's nearest moon, in the background A female and male Kerbal standing on the launchpad. The player operates a space program operated by Kerbals, a species of small green humanoids, who have constructed a spaceport on their home planet, Kerbin.
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A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely from propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space. Rockets work more efficiently in a vacuum and incur a loss of thrust due to the opposing pressure of the atmosphere.
Rocket jumping became very popular in the original Quake (1996), and was used as an advanced technique for deathmatch play [8] as well as for the Quake done Quick series. In the game Team Fortress 2 (2007), the Soldier class can use his rockets to rocket jump. This is an intentional feature with several mechanics associated with it.
To reach orbit, the rocket must impart to the payload a delta-v of about 9.3–10 km/s. This figure is mainly (~7.8 km/s) for horizontal acceleration needed to reach orbital speed, but allows for atmospheric drag (approximately 300 m/s with the ballistic coefficient of a 20 m long dense fueled vehicle), gravity losses (depending on burn time ...
The middle rocket shows the straight-line flight configuration in which the direction of thrust is along the center line of the rocket and through the center of gravity of the rocket. On the rocket at the left, the nozzle has been deflected to the left and the thrust line is now inclined to the rocket center line at an angle called the gimbal ...