In Space Quest II, the player can walk horizontally and vertically as well as diagonally. Diagonal controls are important as some areas are ridiculous or even impossible without them.
The controls are such that when Num Lock is disabled, the numeric keypad controls the direction, as shown in the following table:
Pressing a direction while already moving in that direction stops the player. This is useful for precise control.
There are four speed options: Fastest, Fast, Normal, Slow. It is recommended to use Fast speed for most of the game. Slow speed should be used for precise movement during certain sections, such as the root monster maze.
Some parts of the game require pressing a certain key. For example: "F6 to exit this screen".