A version of the arcade game in which you must safely land in a valley, avoiding the rocky mountainsides. You have the choice of five venues each becoming more formidable as the local gravity increases. When you finally come down to Earth, which is the most difficult, there is the additional hazard of a lake.
The keyboard is used to control your descent by the spin and variable thrust of your lander. These require careful and constant adjustment. Instrument readings are displayed at the top of the screen.
The action is slow - a limitation of any program written in TI Basic - but this in no detracts from the game. The more experienced player can turn the readings off thereby everything up.
Two minor points are that the Y character has been misassigned to a blue block, and poor navigators might displace parts of readings.