Description taken from Commodore 64/128 version of this game

President John F. Kennedy's stated goal for the United States of "...landing a man on the moon and returning him safely to Earth" was realized in 1969 with the historical voyage of Apollo 11. Throughout the 1960s and 1970s, numerous Apollo missions rocketed teams of brave explorers into outer space, on and around the moon. Now you can share in their collective experiences from countdown to splashdown with Apollo 18: Mission to the Moon for the Commodore 64.

To successfully accomplish a complete mission in Apollo 18, you must first blast off, perform docking and correction maneuvers, land on the moon, and perform "Extra Vehicular Activity" (EVA) on the surface. Following those tasks, you then lift off from the moon, re-dock with the Command Module (CM), perform a space walk, practice satellite capture, re-enter Earth's atmosphere, and splashdown. At the end of each of these sub-missions, you are shown a mission status/score screen. Speed and efficiency with each task are of the utmost importance.

A number of gauges and indicators are used to help you perform in the sub-missions. For example, an altitude indicator helps you execute a lunar landing at minimum velocity, and to achieve a perfect blast off you must press the fire button when a red bar reaches the mid-line. Multiple graphs and views are used as well, such as the three landing site approach windows in the lunar landing sequence, and the NASA flight director's control panel in the Mission Control Room. ~ Brett Alan Weiss, All Game Guide