You may move the character on the screen with arrow keys, the numeric keypad, or by clicking the left mouse button. To halt your character's steps with the keypad, press number 5, or press the last used direction key again. Do not hold the direction key.
Game speed control
At times it may be useful to slow down the speed of the game animation in order to negotiate a tricky section, or observe something more carefully. In Space Quest III, speed is controlled by the [+] and [-] keys, or by selecting a choice from the Speed menu, using the mouse or arrow keys.
Short cuts for common commands
[F1]
Help
[F2]
Toggle sound on/off
[F3], [Spacebar]
Repeat previous command
[F5]
Save game
[F7]
Restore saved game
[F9]
Restart game from beginning
[Tab]
Inventory
[ESC]
Show menu bar, Pause game
[Ctrl-C]
Cancel typed command line
[Ctrl-I]
Inventory
[Ctrl-P]
Paus game
[Ctrl-Q]
Quit game
[+]
Increase speed
[-]
Decrease speed
[=]
Normal speed
[Ctrl-V]
Change volume
Interacting
You can generally interact with the game by typing simple commands consisting of as little as a noun and a verb. For instance, the command get into the car can be shortened to get in car. Unless otherwise instructed, follow all commands with ENTER. Space Quest III will understand many common verbs, such as look, get, read, load, pry, climb, push, play, tell, use, ask, give, take and so on. You can repeat a command by pressing [F3].
And finally...
It can be handy to take notes as you discover clues and information. Make sure to look everywhere and pick up everything. And finally: SAVE YOUR GAME OFTEN.