A Mind Forever Voyaging is a text adventure (nowadays known as "interactive fiction") that's as much an indictment of certain political leanings as it is an examination of the nature of being human.
It's also one of the most ambitious text adventures of the era, with time constantly advancing and an enormous amount of locations to see. Who needs graphics, when you've got a story this good?
Sure, it's not exactly on par with Brave New World and 1984 the way Infocom claimed, but it's still excellent in part because it's a game and not a novel.
Modern perspective: The hardest part of playing A Mind Forever Voyaging nowadays is finding a copy. A legal copy, that is. Also, the game came with "feelies"—physical items packed into the box that would be helpful to have on hand while playing. Luckily, there's this site.