The Landing Balloons are a type of generated vehicle that help the player to land on Mars without any fall damage. This vehicle spawns along the player upon entering the dimension.
Once the player has entered Mars, the landing balloons attached to a parachute spawn involving the player and start to fall to the surface. For the first seconds, a parachute will help slow down the descend and then detaches. The landing balloons will carry the player down to the surface and then bounce a few times until they stop. The controls are quite limited, the player can roll and steer the balloons a little bit while moving.
The player can exit the balloons by dismounting (shift-key or right-click). Once exiting, the player cannot mount anymore. Dismounting the landing balloons before they land and stop completely can lead to fall damage and death.
They have no crafting recipe as they cannot be crafted. They are entities generated by the game.
They are unobtainable on survival or creative mode, unless by cheat commands. Internally they are called EntityLandingBalloons.
Landing Balloons have their own inventory space which can be accessed by right-clicking the balloons. The inventory consists of the slots for the items transported by the rocket before entering the dimension, two slots to retrieve the rocket itself and Rocket Launch Pads and another slot to retrieve the remaining Rocket Fuel which can be collected with Empty Liquid Canisters. Even after exiting the balloons, the inventory can be used as a chest to store items.
The landing balloons can be busted by punching or firing arrows. They will drop all the content except the fuel and itself.
The landing balloons are based on the airbags used to land the real-life Opportunity and Spirit rovers on Mars.