Platform: Commodore, DOS, Apple II
Publisher: Electronic Arts
One of the oldest entries on the list, Wasteland was a generation ahead of role-playing games in terms of scope and ambition.
Another title that sees the world reduced to a radioactive hellscape after a nuclear holocaust, Wasteland is the spiritual forerunner to the Fallout series. It was developed by the same people from Interplay that would go on to work on the Fallout titles at Bethesda. The game's mechanics were directly modeled after old pen and paper tabletop games that saw your characters gain experience and increase in level while exploring a persistent world.
Your decisions carried over from one play to the next and Wasteland was one of the first titles to institute this feature.