D/Generation is an amazing and engrossing isometric action-adventure-puzzle game published by Mindscape in 1991.
The year is 2021 and you arrive to the headquarters of Genoq technologies to deliver a package to one of their researchers. You arrive in your jetpack at the top of the building where you quickly find out that something went terribly wrong. The story of what has happened is pieced together bit by but through the various computer terminals and NPC integration. This works to the advantage of the game. If you are interested in the story you can focus on the gameplay, if you want everything in balance you can be more attentive to the bits of information that you discover.