An unknown Lucas Arts trilogy
Going back over 20 years in time, Lucas Arts (known as Lucasfilm Games) - they did Star Wars already - but there was more originality next to it.
Come to speak of 3 games that I always wanted to try but never had. I guess I was too young to know exactly what these games were about. Don't you find it interesting what came before Maniac Mansion, Monkey Island, Sam&Max and Star Wars?
Note that the next three games use a unique engine for visualizing the environment called fractal graphics. This was an early approach to 3D graphics to put the player right into the game.
Koronis Rift
(C) 1985 Lucasfilm Ltd. / Published by Activision.

Can you believe it? On one side of the disk was the C64 version, and on the other side the Atari version. Anyways, you have to explore the planet Koronis, find modules to enhance your own battletank by laser, shield, radar. You had to get the best modules keep to yourself and sell/trade the others. Goal of the game is getting force over the planet.
Rescue on Fractalus!
(C) 1985 Lucasfilm Ltd. / Game by Softalent. Published by Activision.

Interesting info from game creator David Fox:
http://de.youtube.com/watch?v=QYnFfIscHgo
Gameplay footage of hacked C64 version:
http://de.youtube.com/watch?v=A8_-78G8D_I
It's a game where you fly above an alien planet in search for stranded people. You always see through your cockpit, and have the options to land at specific blinking points and open your doors. but you have to land in a god spot to see whats coming after you. if its head is green its an alien. so dont open your doors when you dont see whats coming behind you. wait for the pilots to knock on the door. if its an alien it will try to smash into your flying saucer!!!!11! awsome.